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.

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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
RNR Natural disasters
Class here: Earthquakes, volcanic eruptions, floods, mudslides, hurricanes and cyclones, tornados, tsunamis, droughts, wildfires, etc.
See also: JBFF Social impact of disasters

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