BIC Subject Categories and Qualifiers

This is BIC’s Subject Categories and Qualifiers Scheme, version 2.1 released November 2010, the standard classification scheme for the UK book trade and some other English language markets, available from

Note that BIC has announced that there will be no further development of the BIC scheme, and that Thema is its preferred subject scheme for current and future use. Browse the latest version of the Thema international, multilingual subject category scheme here.

See the Search hints below

Code Description
P Mathematics and science
Do not use “P” on individual books; select appropriate code(s) from Section P below
PN Chemistry
For laboratory technique and experiments, use PDN “Scientific equipment, experiments and techniques” plus appropriate PN* code. See also: TDC “Industrial chemistry”. For environmental chemistry, see TQ “Environmental science, engineering and technology and following”
PNF Analytical chemistry
PNK Inorganic chemistry
PNN Organic chemistry
PNR Physical chemistry
PNT Crystallography
PNV Mineralogy and gems

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