Thema Subject Categories 1.4

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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
1.4
PN Chemistry
See also: TDC Industrial chemistry and chemical engineering, TQ* Environmental science, engineering and technology and its subcategories
PNC Environmental chemistry
Class here: atmospheric, soil and water chemistry, chemical pollution and remediation. Use TQ* for practical applications of environmental chemistry.
See also: RBGK Geochemistry, TQ* Environmental science, engineering and technology and its subcategories
1.1

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