Thema Subject Categories 1.2

Previous versions of Thema are still available 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 ?
T Technology, Engineering, Agriculture
TB Technology: general issues
TC Biochemical engineering
TD Industrial chemistry & manufacturing technologies
TG Mechanical engineering & materials
TH Energy technology & engineering
TJ Electronics & communications engineering
TN Civil engineering, surveying & building
TQ Environmental science, engineering & technology
Use TQ* codes for technical & practical aspects of environment, pollution, waste disposal, etc. Use PNC for study and research. See also: RN* The environment and its subcategories
TR Transport technology & trades
See also: KNG Transport industries, RPT Transport planning & policy, WG* Transport: general interest and its subcategories
TT Other technologies & applied sciences
TV Agriculture & farming
See also: KNA Agribusiness & primary industries, KCVD Agricultural economics