Studies on the control of cabbage caterpillars with derris in the South  / 
by W. J. Reid [et.al.] 
 - Washington  :   Department of Agricultural 
 - 27 p 
 - EUA. Dept. of Agriculture Circular; 615 .
<br/><br/><label>LCCN: </label>202904 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Col -- Plagas  Orugas  Control de plagas  Plantas insecticidas  Derris