00321nam a2200109Ia 450000500170000000800410001708200120005810000200007024500630009026000500015330000080020320260224040945.0260224s9999||||xx |||||||||||||| ||und||  a633 KHU  aKhurana, S.M.P. 0aPathological problems of economic crop plants and their…  aJodhpur : Scientific Publishers (India)c1998  a656