Information bulletin.

New York : United Nations, 1960

New sources of energy and energy development :

New York : United Nations, 1962 , "United Nations publication. Sales no.: 62.I.21." | At head of title: Dept. of Economic and Social Affairs. | "List of conference papers": p. 55-60.

Place Hold on New sources of energy and energy development :

University of Zambia Library Search for 'au:"United Nations Conference on New Sources of Energy (1961 : Rome, Italy)"'

Information bulletin.

New sources of energy and energy development :