International Conference on Environmentally Sustainable Development (1993 :)

Valuing the environment : = proceedings of the first annual International Conference on Environmentally Sustainable Development held at the World Bank, Washington, D.C., September 30-October 1, 1993 / by: International Conference on Environmentally Sustainable Development (1993 :); Serageldin, Ismail, (1944-); Steer, Andrew D., (1952-); Hetzner, Alicia. (書目-語言資料,印刷品)