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 ?
T Technology, Engineering, Agriculture, Industrial processes
Use for: associated skills, trades & professions
TQ Environmental science, engineering & technology
Use for: (TQ* codes) technical & practical aspects of environment, pollution, waste disposal, etc. Prefer PNC for study and research. See also: RN* The environment and its subcategories
TQD Environmental monitoring
TQK Pollution control
See also: RNP Pollution & threats to the environment
TQS Sanitary & municipal engineering

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