T. Yellamanda Reddy Principles of Agronomy - Ludhiana Kalyani Publishers 2002 - 528p T. Yellamanda Reddy & G.H. Sankara Reddi: Principles of Agronomy. Ludhiana. Kalyani Publishers, 2002. 81-272-0282-7--(630RED) ENGLISH ISBN: 81-272-0282-7 Dewey Class. No.: 630 / YEL