American Society of Agronomy, Soil Science Society of America, Havlin, J., & Jacobsen, J. S. (1994). Soil testing: Prospects for improving nutrient recommendations. Soil Science Society of America : American Society of Agronomy.
Citación estilo ChicagoAmerican Society of Agronomy, Soil Science Society of America, John Havlin, and Jeffrey S. Jacobsen. Soil Testing: Prospects for Improving Nutrient Recommendations. Madison, Wis., USA: Soil Science Society of America : American Society of Agronomy, 1994.
Cita MLAAmerican Society of Agronomy, Soil Science Society of America, John Havlin, and Jeffrey S. Jacobsen. Soil Testing: Prospects for Improving Nutrient Recommendations. Madison, Wis., USA: Soil Science Society of America : American Society of Agronomy, 1994.