Walton, W. R <br/><br/>
The true army worm and its control  / 
by W. R. Walton 
 - Washington  :   Department of Agriculture 
 - 12 p. 
 - EUA. Dept. of Agriculture Farmers bull.; 731 .
<br/><br/><label>LCCN: </label>203570 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Pseudaletia unipuncta  Control de plagas