Thema Subject Categories 1.4

Previous versions of Thema are still available 1.3 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
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
1.4
RN The environment
Class here: Environmental science.
See also: TQ* Environmental science, engineering and technology and its subcategories
1.4
RNH Waste management
Class here: recycling, biodegradability.
See also: TQSR Waste treatment and disposal

version detail