Workshop on Environmental Planning Guidelines for Strategies and Pla ns : proceedings on environmental planning approaches to the prepara tion of conservation strategies and plans for sustainable development, Turrialba, Costa Rica, 16-19 March 1981. - Workshop on Environmental Planning Guidelines for Strategies and Pla ns (1981 : Turrialba, Costa Rica); Commission on Environmental Planning; United Nations University (Turrialba : CATIE, 1981)
Keywords: Environmental policy -- Congresses