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 ?
W Lifestyle, Hobbies & Leisure
Use for: (all W* codes) popular accounts for general readership. Prefer Sections A*, K*, P*, R*, T*, etc, as appropriate, for specialist & academic works
WG Transport: general interest
See also: KNG Transport industries, TR* Transport technology & trades and its subcategories
WGC Road & motor vehicles: general interest
See also: TRCT Road transport & haulage trades
WGD Bicycles & non-motorised transport: general interest & maintenance
See also: SMQ Cycle racing, SZD Cycling: general & touring
WGF Trains & railways: general interest
Class here: company histories, maps & atlases, general works on railways. See also: TRF* Railway technology, engineering & trades and its subcategories
WGG Ships & boats: general interest
Class here: inland waterways & ocean-going craft. See also: SPN* Boating: Sport & leisure and its subcategories, NHTM Maritime history
WGM Aircraft & aviation
Class here: commercial aircraft, airlines, airports. See also: TRP* Aerospace & aviation technology and its subcategories

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