Thema Subject Categories 1.4

Previous versions of Thema are still available 1.3 1.2 1.1 1.0.

Browse the Thema subject categories hierarchy, or search for a specific term within the hierarchy.

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Notation Category heading Add Mod ?
P Mathematics and Science
Use all P* codes for: mostly academic, technical and specialist titles and some general adult works. Qualifiers are mostly not required with P* codes. DO NOT USE: code ‘P’ itself, but select specific categories from section P*.
Prefer: WN* codes for general interest adult titles where appropriate
PN Chemistry
See also: TDC Industrial chemistry and chemical engineering, TQ* Environmental science, engineering and technology and its subcategories
PNR Physical chemistry
PNRA Computational chemistry 1.1
PNRC Colloid chemistry
PNRD Catalysis
PNRE Experimental chemistry 1.2
PNRH Electrochemistry and magnetochemistry
Class here: battery chemistry
PNRL Nuclear chemistry, photochemistry and radiation
PNRP Quantum and theoretical chemistry
PNRR Physical organic chemistry 1.1
PNRS Solid state chemistry
PNRW Thermochemistry and chemical thermodynamics
PNRX Surface chemistry and adsorption

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