T.Yellamanda Reddy Principles of Agronomy - Ludhiana Kalyani Publishers 1992 - 527p T.Yellamanda Reddy & G.H.Sankara Reddi: Principles of Agronomy. Ludhiana. Kalyani Publishers, 1992. 81-272-0282-7--(630RED) ENGLISH ISBN: 81-272-0282-7 Dewey Class. No.: 630 / YEL