Report of the round table on export credit as a means of promoting exports from developing countries / United Nations. Productivité des écosystèmes forestiers. United Nations. Symposium on the Productivity of Forest Ecosystems, Brussels, 1969. International Biological Programme. 382.6 UNR Includes bibliographies. New York : United Nations, 1969. 1969. 1969 Text 27 p. ; eng