kalċju
68INDUSTRIJA- MT
6816industriji tal-ħadid, tal-azzar u industriji oħra tal-metall - BT1 metall nonferruż
- BT2 metalli
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)
Maltese)