00317    a2200109   4500020001500000082001500015100002300030245007200053260004700125300002100172650001400193  a8172331789  a571.9bPAT  akhurana, S.M. Paul  aPathological problems of economics crop plants and their management  aJodhpurbScientific Publishersc1998g1998  axiii,656p.c25cm  aPathology