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1.

図書
図書
1. Outline of a plan for scientific research and training in Africa
Unesco ; United Nations. Economic Commission for Africa
出版情報: [Paris] : United Nations Educational, Scientific and Cultural Organization, [1964]
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2.

図書
図書
2. A review of the natural resources of the African continent
Unesco
出版情報: Paris : Unesco, 1963
シリーズ名: Natural resources research ; 1
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