Parker, J. R. <br/><br/>
Fight grasshoppers by plowing stubble  / 
by J. R. Parker 
 - Washington  :   Department of Agriculture 
 - 4 p. 
 - EUA. Dept. of Agri. Circular; 302 .
<br/><br/><label>LCCN: </label>203878 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Chapulines  Labranza