00510nam a2200169Ia 4500001001000000003000500010008004100015010001100056040000900067100001700076245009100093260004600184300001000230440004400240650002200284700003400306Para_4413CHAP220125s1945    xx            000 0 und d  a202840  cCHAP  aCotton, R. T  aControlling insects in flour mills  /c R. T. Cotton, J. C. Frankenfeld and G. A. Dean  aWashington  :b Department of Agriculture  a75 p.  aEUA. Dept. of Agriculture Circular; 720  aControl de Plagas  aFrankenfel, J. C. Dean, G. A.