Nações Unidas., Environment Programme Annual report of the executive director 1986 / United Nations Environment Programme

Annual report of the executive director 1986 / United Nations Environment Programme . - Nairobi : UNEP, 1987- . - v. 27 cm . -
Parte 1 : 1987. - VIII, 176 p., [4] f. dobr. : il.
92-807-1134-2 (pt.1) Brochado

504.06