Agro-forestry in the African humid tropics :

Tokyo : United Nations University (UNU) , 1982 . viii, 163p. : , "The Workshop on Agro-forestry in the African Humid Tropics was co-sponsored by the United Nations University and the International Development Research Centre ..."--T.p. verso. 28 cm.. 9280803646 (pbk.)

Natural resources development in the Sahel :

By MacDonald, Lee H.. Tokyo, Japan : United Nations University (UNU) , 1986 . vi, 94p. : 28 cm.. 9280804227

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Agro-forestry in the African humid tropics :

Natural resources development in the Sahel :