00339nam a22000977a 4500082001700000100002100017245004500038260005000083300000800133650010000141  a632.9 ric/pe  aRichard T Cotton  aPests of stored grain and grain products  aMinneapolisbburgess publishing companyc1941  a306  agrain and its conservationarodent and bird pests of stored grainainsect pests of stored grain