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
TT Other technologies & applied sciences
TTD Space science
See also: WNX Popular astronomy & space
TTDS Astronautics
Class here: technical aspects of space exploration e.g. spacecraft design & technology
TTDX Space exploration
Class here: manned & unmanned space missions & programs, Apollo, Vostok, Sputnik, Voyager etc. See also: WNX Popular astronomy & space

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