International Referral System for Sources of Environmental Information : international directory of sources, 1983/1984, v. A-G.
1983
Notice détaillée
SymboleUNEP/INFOTERRA/D.83
TitreInternational Referral System for Sources of Environmental Information : international directory of sources, 1983/1984, v. A-G.
Cote
UNEP/INFOTERRA(015)/S6
DateNairobi : UN, Jan. 1983.
Description
7 vols.