Bennett, W. F. (1993). Nutrient deficiencies and toxicities in crop plants. APS.
Lua i Stíl Chicago (17ú heag.)Bennett, William F. Nutrient Deficiencies and Toxicities in Crop Plants. APS, 1993.
Lua MLA (9ú heag.)Bennett, William F. Nutrient Deficiencies and Toxicities in Crop Plants. APS, 1993.
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