Critical issues in biological control / 
edited by Manfred Mackauer, Lester E. Ehler, Jens Roland. 
 - Andover, Hants [England] :  New York, NY :  Intercept ;  VCH Publishers,  1990. 
 - xvii, 330 p. :  ill. ;  22 cm. 
<br/><br/>Includes bibliographical references. 
<br/><br/><label>ISBN: </label>1560810297 
<br/><br/><label>LCCN: </label>89-70594  //r91 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Pests--Biological control.<br/>Biological pest control agents.
<br/><br/><label>LC Class. No.: </label>SB975  / C75 1990