Thema Subject Categories 1.3

Previous versions of Thema are still available 1.2 1.1 1.0.

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

See the search hints below.

Notation Category heading Add Mod ?
P Mathematics & Science
PN Chemistry
See also: TDC Industrial chemistry & chemical engineering, TQ* Environmental science, engineering & technology and its subcategories
PNV Chemistry of minerals, crystals & gems 1.2

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