Place Hold on Social and technological management in dry lands :
]]>Place Hold on World food, pest losses, and the environment /
]]>Washington : American Association for the Advancement of Science, 1975 , "A special Science compendium." 087168215X. | 0871682265 pbk.
]]>By Deason, Hilary J.. Washington : American Association for the Advancement of Science, 1963 , First ed. published in 1960 under title: The science book list for children. 0871682028
]]>Place Hold on Directory of scientific and engineering societies in Sub-Saharan Africa.
]]>Place Hold on Directory of scientific and engineering societies in Sub-Saharan Africa.
]]>Place Hold on Women and technological change in developing countries /
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