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.

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Notation Category heading Add Mod ?
P Mathematics & Science
PS Biology, life sciences
Use for: (all PS* codes) academic, specialist and professional level works. Prefer WN* codes for natural history etc for the general reader. See also: WN* Nature & the natural world: general interest and its subcategories
PSV Zoology & animal sciences
See also: WNC Wildlife: general interest
PSVM Zoology: mammals (mammalogy)
See also: WNCF Wildlife: mammals: general interest
PSVM2 Zoology: marine & freshwater mammals
Class here: cetacea & sirenia – whales, dolphins, seacows, etc. Use for: aquatic and semiaquatic mammals. See also: WNCS Wildlife: aquatic creatures: general interest, PSVM Zoology: mammals (mammalogy)

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