Biological control in crop production / 
edited by George C. Papavizas. 
 - Totowa :  Granada,  1981. 
 - ix, 461 p. :  ill. ;  24 cm. 
 - Beltsville symposia in agricultural research ;  5 .
<br/><br/> Open access. 
<br/><br/><label>ISBN: </label>0865980373 
<br/><br/><label>LCCN: </label>8165017  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Pests--Control--Biological control.--Congresses.<br/>Plants, Protection of--Congresses.