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[Besprechung von:] Ruthenberg, Hans: Farming system in the Tropics. New York 1971. Roy, Edward van: Economic systems of Northern Thailand. Ithaca/N.Y. 1971
Boer, John de - In: The Australian journal of agricultural economics 16 (1972) 3, pp. 221-223
Persistent link: https://www.econbiz.de/10001930479
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The economic role of sheep and goats in Indonesia : a case study of West Java
Knipscheer, Henk; Boer, John de; Sabrani, Muhamad - In: Bulletin of Indonesian economic studies 19 (1983) 3, pp. 74-93
Persistent link: https://www.econbiz.de/10002181037
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The structure of Arkansas agriculture : a taxonomy
Gunderson, Ralph O.; Ospina, Enrique - 1986
Persistent link: https://www.econbiz.de/10000730510
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The role of state government in agriculture
Ospina, Enrique (contributor) - 1988
Persistent link: https://www.econbiz.de/10000783094
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Apertura e importaciones agropecuaria
Ospina Gómez, Enrique - In: Coyuntura colombiana 15 (1998) 4, pp. 143-156
Persistent link: https://www.econbiz.de/10001433030
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An investigation of differences in agricultural expenditure by state government
Ospina, Enrique - In: Western journal of agricultural economics : WJAE 15 (1990) 2, pp. 291-299
Persistent link: https://www.econbiz.de/10001116733
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Some interactions between land tenure, technical efficiency, and gross output on mixed farming systems in Fiji
Chandra, Satish; De Boer, John - In: Zeitschrift für ausländische Landwirtschaft : … 20 (1981) 2, pp. 224-236
Persistent link: https://www.econbiz.de/10001990872