United Nations, & Department of Economic and Social Affairs. (1970). Mineral resources development with particular reference to the developing countries: Department of Economic and Social Affairs. New York: United Nations.
Παραπομπή Chicago StyleUnited Nations, και Department of Economic and Social Affairs. Mineral Resources Development With Particular Reference to the Developing Countries: Department of Economic and Social Affairs. New York: United Nations, 1970.
Παραπομπή MLAUnited Nations, και Department of Economic and Social Affairs. Mineral Resources Development With Particular Reference to the Developing Countries: Department of Economic and Social Affairs. New York: United Nations, 1970.
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