Cotton, R. T <br/><br/>
Controlling insects in flour mills  / 
R. T. Cotton, J. C. Frankenfeld and G. A. Dean 
 - Washington  :   Department of Agriculture 
 - 75 p. 
 - EUA. Dept. of Agriculture Circular; 720 .
<br/><br/><label>LCCN: </label>202840 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Control de Plagas