Volk, William H. <br/><br/>
California citrus pests and their control  / 
by William H. Volk y Ronald W. Hunt 
 - Berkeley  :   California Spray-Chemical C. 
 - 26 p. 
<br/><br/><label>LCCN: </label>198583 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Citricos--Plagas <br/>Control de plagas