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1Publicado 1975[s.l.] : La Société, 1975.2 v. : maps.“...Sahel, documents and dissertations ;...”
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2Publicado 1976[s.l. : s.n.], 1976.40 p.“...Sahel, documents and dissertations ;...”
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3Publicado 1974[s.l. : s.n., 1974?]96 p.“...Sahel, documents and dissertations ;...”
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4Publicado 1976[s.l.] : La Société, 1976.37 p., [16] leaves of plates : map.“...Sahel, documents and dissertations ;...”
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5Publicado 1973[s.l. : s.n., 1973?]98 p.“...Sahel, documents and dissertations ;...”
