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
RN The environment
Class here: Environmental science.
See also: TQ* Environmental science, engineering and technology and its subcategories
RNP Pollution and threats to the environment
Class here: plastic waste, air pollution, water pollution, over-consumption.
See also: TQK Pollution control
RNPD Deforestation
RNPG Climate change
Class here: global warming, ‘greenhouse effect’, ozone depletion, the climate emergency. Use for: works that examine climate change, its effects and possible actions to limit or mitigate the consequences

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