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1Được phát hành 1976East Lansing : Dept. of Agricultural Economics, Michigan State University, 1976.v, 103 p. : map.“...Sahel, documents and dissertations ;...”
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2Bằng Sargent, Merritt
Được phát hành 1979East Lansing : Department of Agricultural Economics, Michigan State University, 1979.50 p.“...Sahel, documents and dissertations ;...”
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3Bằng De Benko, Eugene
Được phát hành 1978East Lansing : Sahel Documentation Center, Michigan State University Libraries, 1978.[47] p. in various pagings.“...Sahel, documents and dissertations ;...”
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4Bằng Idachaba, Francis Sulemanu
Được phát hành 1973[East Lansing : Dept. of Agricultural Economics, Michigan State University], 1973.30 p. : ill.“...Sahel, documents and dissertations ;...”
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5Bằng Norman, D. W. (David W.)
Được phát hành 1979East Lansing : Dept. of Agricultural Economics, Michigan State University, 1979.x, 127 p. : maps.“...Sahel, documents and dissertations ;...”
