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Estimated Crop Yields, Costs, and Return for Seven Major Crops Under Current and Recommended Levels of Fertilizer and Production Practices, Michigan, 1953
C. R. Hoglund
R. L. Cook
其他書名
A Progress Report
出版
Michigan State College, Agricultural Experiment Station, Agriculturl Economics Department and Soil Science Department
, 1955
URL
http://books.google.com.hk/books?id=724mAQAAMAAJ&hl=&source=gbs_api
