Helyer, Neil <br/><br/>
Colour handbook of biological control in plant protection 
by Neil Helyer ,Kevin Brown and Nigel D Cattlin 
 - London  Manson Publishing  c2003 
 - 126p.  ;24cm.- 
<br/><br/> includes index 
<br/><br/><label>ISBN: </label>1874545286 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Plants--Disease and pet resistance<br/>Plant immunology  <br/>Pests--Biological control <br/>Biological pest control agents <br/>Pests--Control
<br/><br/><label>Dewey Class. No.: </label>632.96  / HEL