kalcis
68PRAMONĖ- MT
6816metalurgijos pramonė - BT1 spalvotasis metalas
- BT2 metalai
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)
Lithuanian)