singh, S. S. (1988). Principles and practices of agronomy. Kalyani Publishers.
Chicago Edition Citationsingh, S S. Principles and Practices of Agronomy. New Delhi: Kalyani Publishers, 1988.
MLA Edition Citationsingh, S S. Principles and Practices of Agronomy. Kalyani Publishers, 1988.
Warning: These citations may not always be 100% accurate.