Knowlton, George F. <br/><br/>
Vegetable insect contrl / 
by Geroge F. Knowlton, Donald w. Davis y Reed S. Roberts 
 - Logan, Utah :   Utah State University 
 - 32 p. 
 - Circular; 300 .
<br/><br/><label>LCCN: </label>205195 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Control biológico de insectos