Report of the United Nations conference on environment and development, Rio de Janeiro, 3-14 June, 1992
United Nations conference on environment and development (19
Report of the United Nations conference on environment and development, Rio de Janeiro, 3-14 June, 1992 - - Litho : United Nations Pub., 1993 1993 - v.2 27 cm - .
92-1-100498-50
Environment protection-International cooperation-Congresses
Environment and development-United Nations-Congresses
577.4:339.5 Uni:92-2
Report of the United Nations conference on environment and development, Rio de Janeiro, 3-14 June, 1992 - - Litho : United Nations Pub., 1993 1993 - v.2 27 cm - .
92-1-100498-50
Environment protection-International cooperation-Congresses
Environment and development-United Nations-Congresses
577.4:339.5 Uni:92-2