lag
- UF għadira
52AMBJENT- MT
5211ambjent naturali - BT1 ambjent ġeofiżiku
Mapping
- EXM gemet: GEMET (GEneral Multilingual Environmental Thesaurus - EEA)
- EXM unbis: Unbis (United Nations Thesaurus)
- EXM unesco: UNESCO (United Nations Educational, Scientific and Cultural Organization)
- EXM zbw: ZBW (Thesaurus for Econmics)
Maltese)