International Maize and Wheat Improvement Center & Perrin, R. (1988). From agronomic data to farmer recommendations: An economics training manual (Rev. ed.). CIMMYT.
Citace podle Chicago (17th ed.)International Maize and Wheat Improvement Center a Richard Perrin. From Agronomic Data to Farmer Recommendations: An Economics Training Manual. Rev. ed. Mexico: CIMMYT, 1988.
Citace podle MLA (9th ed.)International Maize and Wheat Improvement Center a Richard Perrin. From Agronomic Data to Farmer Recommendations: An Economics Training Manual. Rev. ed. CIMMYT, 1988.
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