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 ?
R Earth Sciences, Geography, Environment, Planning
RG Geography
Use with: (all RG* codes,) PLACE Qualifiers 1* as appropriate
RGX Geographical reference works
RGXB World atlases / world maps
Class here: globes. See also: NHTP1 Historical maps & atlases, WTR* Travel maps & atlases and its subcategories
RGXH Geographical maps (specialist)
Use for: specialist / topographical maps only. Use with: another code indicating specific subject or application where appropriate. See also: WTR* Travel maps & atlases and its subcategories
RGXM Naval & marine charts 1.2
RGXP Place names & gazetteers

version detail