Hoevers,Rik and Scheepens,Piet <br/><br/>
NON-CHEMICAL CROP PROTECTION 

 - Wageningen  CTA  2007 
 - 83p. 
<br/><br/><label>ISBN: </label>978-90-8573-074-3 
<br/><br/><label>Subjects--Topical Terms: </label><br/>plant diseases