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Agricultural Markets in the semi-arid tropics : Proceedings of the international workshop
Oppen, Matthias von (contributor) - 1985
Persistent link: https://www.econbiz.de/10014015876
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Research resource allocation : determining regional priorities
Oppen, M. von; Ryan, James G. - In: Food policy : economics planning and politics of food … 10 (1985) 3, pp. 253-264
Persistent link: https://www.econbiz.de/10003645150
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Tank irrigation in semi-arid tropical India
Oppen, Matthias von; Subba Rao, K. V. - 1987
Persistent link: https://www.econbiz.de/10000782115