Francis, C., & Heichel, G. (1973). Efficiency of energy production in maize-bean and other mixed cropping systems. International Center for Tropical Agriculture.
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Cita Chicago Style (17a ed.)
Francis, C.A, y GH Heichel. Efficiency of Energy Production in Maize-bean and Other Mixed Cropping Systems. International Center for Tropical Agriculture, 1973.
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Cita MLA (9a ed.)
Francis, C.A, y GH Heichel. Efficiency of Energy Production in Maize-bean and Other Mixed Cropping Systems. International Center for Tropical Agriculture, 1973.
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