00310nam a2200109Ia 4500008004100000082002100041100004400062245004000106250001200146260003400158300000800192240913s9999||||xx |||||||||||||| ||und||  aGS    630  BAL/P  aP Balasubramaniyan and S P Palaniyappan 0aPrinciples and Practice of Agronomy  a2nd Ed.  bAgrobios IndiaaJodhpurc2004  a575