Mathematics & science
Mathematics /PB
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* Philosophy of mathematics /PBB
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* Mathematical foundations /PBC
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ˇ Mathematical logic /PBCD
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ˇ Set theory /PBCH
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ˇ Number systems /PBCN
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* Discrete mathematics /PBD
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* Algebra /PBF
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* Groups & group theory /PBG
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* Number theory /PBH
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* Pre-calculus /PBJ
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* Calculus & mathematical analysis /PBK
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ˇ Calculus /PBKA
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ˇ Real analysis, real variables /PBKB
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ˇ Complex analysis, complex variables /PBKD
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ˇ Functional analysis & transforms /PBKF
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ˇ Differential calculus & equations /PBKJ
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ˇ Integral calculus & equations /PBKL
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ˇ Calculus of variations /PBKQ
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ˇ Numerical analysis /PBKS
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* Geometry /PBM
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ˇ Trigonometry /PBMB
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ˇ Euclidean geometry /PBMH
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ˇ Non-Euclidean geometry /PBML
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ˇ Differential & Riemannian geometry /PBMP
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ˇ Analytic geometry /PBMS
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ˇ Algebraic geometry /PBMW
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ˇ Fractal geometry /PBMX
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* Topology /PBP
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ˇ Algebraic topology /PBPD
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ˇ Analytic topology /PBPH
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* Probability & statistics /PBT
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ˇ Bayesian inference /PBTB
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* Optimization /PBU
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ˇ Game theory /PBUD
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ˇ Linear programming /PBUH
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* Combinatorics & graph theory /PBV
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* Applied mathematics /PBW
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ˇ Mathematical modelling /PBWH
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ˇ Stochastics /PBWL
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ˇ Nonlinear science /PBWR
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ˇ Chaos theory /PBWS
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ˇ Fuzzy set theory /PBWX
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* History of mathematics /PBX
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Science: general issues /PD
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* Philosophy of science /PDA
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* Scientific nomenclature & classification /PDC
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* Scientific standards /PDD
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ˇ Mensuration & systems of measurement /PDDM
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* Maths for scientists /PDE
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* Industrial applications of scientific research & technological innovation /PDG
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* Science funding & policy /PDK
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* Scientific equipment, experiments & techniques /PDN
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ˇ Microscopy /PDND
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* Impact of science & technology on society /PDR
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* History of science /PDX
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* Popular science /PDZ
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ˇ Popular mathematics /PDZM
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Astronomy, space & time /PG
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* Theoretical & mathematical astronomy /PGC
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* Astronomical observation: observatories, equipment & methods /PGG
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* Cosmology & the universe /PGK
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* Galaxies & stars /PGM
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* Solar system: the Sun & planets /PGS
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* Astronomical charts & atlases /PGT
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* Time (chronology), time systems & standards /PGZ
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Physics /PH
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* Classical mechanics /PHD
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ˇ Elementary mechanics /PHDB
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ˇ Analytical mechanics /PHDD
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ˇ Fluid mechanics /PHDF
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ˇ Wave mechanics (vibration & acoustics) /PHDS
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ˇ Dynamics & statics /PHDT
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ˇ Gravity /PHDV
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ˇ Energy /PHDY
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* Materials / States of matter /PHF
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ˇ Low temperature physics /PHFB
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ˇ Condensed matter physics (liquid state & solid state physics) /PHFC
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↪ Soft matter physics /PHFC1
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↪ Mesoscopic physics /PHFC2
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ˇ Physics of gases /PHFG
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ˇ Plasma physics /PHFP
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* Thermodynamics & heat /PHH
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* Optical physics /PHJ
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ˇ Laser physics /PHJL
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* Electricity, electromagnetism & magnetism /PHK
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* Atomic & molecular physics /PHM
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* Nuclear physics /PHN
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* Particle & high-energy physics /PHP
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* Quantum physics (quantum mechanics & quantum field theory) /PHQ
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* Relativity physics /PHR
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* Statistical physics /PHS
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* Mathematical physics /PHU
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* Applied physics /PHV
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ˇ Astrophysics /PHVB
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ˇ Medical physics /PHVD
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ˇ Geophysics /PHVG
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ˇ Atmospheric physics /PHVJ
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ˇ Biophysics /PHVN
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ˇ Chemical physics /PHVQ
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ˇ Cryogenics /PHVS
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Chemistry /PN
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* Analytical chemistry /PNF
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ˇ Chromatography /PNFC
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ˇ Magnetic resonance /PNFR
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ˇ Spectrum analysis, spectrochemistry, mass spectrometry /PNFS
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* Inorganic chemistry /PNK
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* Organic chemistry /PNN
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ˇ Organometallic chemistry /PNND
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ˇ Polymer chemistry /PNNP
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* Physical chemistry /PNR
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ˇ Colloid chemistry /PNRC
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ˇ Catalysis /PNRD
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ˇ Electrochemistry & magnetochemistry /PNRH
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ˇ Nuclear chemistry, photochemistry & radiation /PNRL
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ˇ Quantum & theoretical chemistry /PNRP
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ˇ Solid state chemistry /PNRS
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ˇ Thermochemistry & chemical thermodynamics /PNRW
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ˇ Surface chemistry & adsorption /PNRX
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* Crystallography /PNT
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* Mineralogy & gems /PNV
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Biology, life sciences /PS
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* Life sciences: general issues /PSA
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ˇ Taxonomy & systematics /PSAB
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ˇ Bio-ethics /PSAD
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ˇ Ecological science, the Biosphere /PSAF
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ˇ Xenobiotics /PSAG
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ˇ Evolution /PSAJ
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ˇ Genetics (non-medical) /PSAK
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↪ DNA & Genome /PSAK1
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ˇ Neurosciences /PSAN
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* Biochemistry /PSB
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ˇ Proteins /PSBC
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ˇ Carbohydrates /PSBF
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ˇ Lipids /PSBH
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ˇ Biochemical immunology /PSBM
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ˇ Toxicology (non-medical) /PSBT
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ˇ Enzymology /PSBZ
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* Developmental biology /PSC
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* Molecular biology /PSD
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* Cellular biology (cytology) /PSF
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* Microbiology (non-medical) /PSG
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ˇ Bacteriology (non-medical) /PSGD
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ˇ Parasitology (non-medical) /PSGH
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ˇ Virology (non-medical) /PSGL
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ˇ Protozoa /PSGN
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* Hydrobiology /PSP
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ˇ Freshwater biology /PSPF
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ˇ Marine biology /PSPM
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* Mycology, fungi (non-medical) /PSQ
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* Botany & plant sciences /PST
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ˇ Plant physiology /PSTD
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ˇ Plant reproduction & propagation /PSTL
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ˇ Plant pathology & diseases /PSTP
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ˇ Plant ecology /PSTS
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ˇ Phycology, algae & lichens /PSTV
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* Zoology & animal sciences /PSV
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ˇ Animal physiology /PSVD
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ˇ Animal reproduction /PSVH
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ˇ Animal pathology & diseases /PSVL
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ˇ Animal behaviour /PSVP
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ˇ Animal ecology /PSVS
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ˇ Zoology: Invertebrates /PSVT
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↪ Molluscs /PSVT3
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↪ Crustaceans /PSVT5
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↪ Arachnids /PSVT6
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↪ Insects (entomology) /PSVT7
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ˇ Zoology: Vertebrates /PSVW
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↪ Fishes (ichthyology) /PSVW1
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↪ Amphibians /PSVW3
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↪ Reptiles /PSVW5
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↪ Birds (ornithology) /PSVW6
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↪ Zoology: Mammals /PSVW7
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↪ Marsupials & monotremes /PSVW71
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↪ Marine & freshwater mammals /PSVW73
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↪ Primates /PSVW79
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* Human biology /PSX
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ˇ Early man /PSXE
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ˇ Medical anthropology /PSXM
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