00867nam0-22002651i-450-99000671731040332120070116120653.0000671731FED01000671731(Aleph)000671731FED0100067173120010426d1990----km-y0itay50------baengy-------001yyWorld resources 1990-91a report by the World Resources Institutein collaboration with the United Nations Environment Programme and the United Nations Development ProgrammeOxfordOxford University Press1990XIV, 383 p.28 cmWorld Resources Institute34926ITUNINARICAUNIMARCBK990006717310403321VII A 35615207FSPBCFSPBCWorld resources 1990-91615717UNINA