Helyer, Neil <br/><br/>
A Color Handbook of Biological Control in Plant Protection 
Neil Helyer, Nigel D. Cattlin, and Kevin C. Brown. 
 - Portland  Timber Press  2003 
 - 126p. 
<br/><br/><label>ISBN: </label>0881925993 
<br/><br/><label>Subjects--Topical Terms: </label><br/> Biological pest control agents--Handbooks, Manuals, etc.<br/> Pest Management<br/>Insects as biological pest control agents --Handbooks, Manuals, etc.<br/>Plant Protection, Weed Control<br/>Natural pesticides --Handbooks, Manuals, etc.
<br/><br/><label>Dewey Class. No.: </label>632.95