Imprint[Hanoi] : Government of Viet Nam, Ministry of Science, Technology and Environment, June 1995.
vii, 113 p. : graphs, tables
At head of title: Government of Viet Nam, Ministry of Science, Technology and Environment. Financed by: United Nations Development Programme. Executed by: World Bank. Prepared with the assistance of Vietnamese Counterpart Teams. "VIE/89/034".