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Dyfyniad Arddull ChicagoDepartment of Economic and Social Affairs. Science and Technology for Development: Proposals for the Second United Nations Development Decade; Report. New York, NY: United Nations, 1970.
Dyfyniad MLADepartment of Economic and Social Affairs. Science and Technology for Development: Proposals for the Second United Nations Development Decade; Report. New York, NY: United Nations, 1970.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.