Earth Summit +5 [picture] : challenges for the 21st century, special session of the United Nations General Assembly, New York, 23-27 June 1997.
United Nations.Department for Policy Coordination and Sustainable Development.
United Nations.Department of Public Information.
[New York] : United Nations Dept. for Policy Coordination and Sustainable Development ; United Nations Dept. of Public Information,
[1997]
"February 1997."
United Nations Conference on Environment and Development (1992 : Rio de Janeiro, Brazil)
Environmental policy
Economic development