Thema Subject Categories 1.4

Previous versions of Thema are still available 1.3 1.2.

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
Use all R* codes for: academic, technical, specialist and general adult titles. DO NOT USE: code ‘R’ itself, but select specific categories from section R*. Use all R* codes with: other subject categories and qualifiers where appropriate, in particular PLACE 1* Qualifiers
RG Geography
Use all RG* codes with: PLACE 1* Qualifiers as appropriate
RGB Physical geography and topography
See also: RBG Geology, geomorphology and the lithosphere
RGBC Plains and grasslands
RGBC1 Prairies

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