Stephen R Chapman. (1976). Crop production: Principles and practices. San Francisco: W.H.Freeman and Company.
Trích dẫn kiểu ChicagoStephen R Chapman. Crop Production: Principles and Practices. San Francisco: W.H.Freeman and Company, 1976.
Deismireacht MLAStephen R Chapman. Crop Production: Principles and Practices. San Francisco: W.H.Freeman and Company, 1976.
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