ID:DA13036882
同姓同名の著者を検索
Hans E. Jahnke, Dieter Kirschke, and Johannes Lagemann ; in collaboration with K.J. Billing ... [et al.]
World Bank c1987 CGIAR study paper no. 21
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K.J. Billing
World Bank c1985 CGIAR study paper no. 6
: pbk
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