Bear, F. E., & Kitchen, H. B. (1948). Diagnostic techniques for soils and crops: Their value and use in estimating the fertility status of soils and nutritional requirements of crops. Washington, D.C.: The American Potash Institute.
Chicago Style CitationBear, Firman E., and Herminie Broedel Kitchen. Diagnostic Techniques for Soils and Crops: Their Value and Use in Estimating the Fertility Status of Soils and Nutritional Requirements of Crops. Washington, D.C.: The American Potash Institute, 1948.
MLA CitationBear, Firman E., and Herminie Broedel Kitchen. Diagnostic Techniques for Soils and Crops: Their Value and Use in Estimating the Fertility Status of Soils and Nutritional Requirements of Crops. Washington, D.C.: The American Potash Institute, 1948.