Suggested Topics within your search.
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1by Wieringa, J. J. (Jan Johannes), 1967-
Published 1999[Wageningen, Netherlands : Wageningen Agricultural University, 1999]xvi, 320 p. : ill. (some col.), maps ; 25 cm. -
2by Ensermu Kelbessa
Published 1990Uppsala : Stockholm ; New York : Academiae Upsaliensis ; Distributor, Almqvist & Wiksell International, 1990.96 p. : ill., maps ; 25 cm.