Singh, S. S., & Rajesh Singh. (1988). Principles and practices of agronomy. Kalyani publishers.
Chicago Edition CitationSingh, S S., and Rajesh Singh. Principles and Practices of Agronomy. Ludhiana: Kalyani publishers, 1988.
MLA Edition CitationSingh, S S., and Rajesh Singh. Principles and Practices of Agronomy. Kalyani publishers, 1988.
Warning: These citations may not always be 100% accurate.