Science, technology, and development. United States papers prepared for the United Nations conference on the application of science and technology for the benefit of the less developed areas. Vol.lsNatural resources. Energy, water and river basin development. Washington, U.S.gvmt. prtg.off. ,[19621

År: 1962

Sider: 9

UDK: 620.9(06), 551.49(06)

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