calcium
68INDUSTRY- MT
6816iron, steel and other metal industries - BT1 non-ferrous metal
- BT2 metals
Mapping
- EXM agrovoc: Agrovoc (FAO - Food and Agriculture Organization)
- EXM gemet: GEMET (GEneral Multilingual Environmental Thesaurus - EEA)
- EXM unesco: UNESCO (United Nations Educational, Scientific and Cultural Organization)
English)