nixfa
52AMBJENT- MT
5216deterjorament ambjentali - BT1 diżastru naturali
- BT2 degradazzjoni ambjentali
- RT aċidifikazzjoni (
5216) - RT is-Saħel (
7221) - RT żona arida (
5211)
Mapping
- EXM agrovoc: Agrovoc (FAO - Food and Agriculture Organization)
- 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)