00286nam a2200109Ia 450000500170000000800410001708200140005810000170007224500380008926000410012730000080016820260224040913.0260224s9999||||xx |||||||||||||| ||und||  a630.2 SIN  aSingh, S.S.  0aHandbook of agricultural sciences  aLudhiana : Kalyani Publicationc2009  a880