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Seed potato systems in Kenya : A case study
Crissman, Charles C. - 1993
Persistent link: https://www.econbiz.de/10014006410
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Agroeconomic evaluation of different types of potato planting material in Egypt
Crissman, Charles C. (contributor) - 1991
Persistent link: https://www.econbiz.de/10000134299
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Cost of seedling tubers produced from true potato seed : an estimate based on experimental production in Egypt
Bedewy, Ramzy el-; Crissman, Charles C. - 1991
Persistent link: https://www.econbiz.de/10000134301
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Seed potato systems in Ecuador : a case study
Crissman, Charles C.; Uquillas, Jorge E. - 1989
Persistent link: https://www.econbiz.de/10000134573