Proceeding on plant protection 

 - Butterworths  Scientific Publications          1957 
 - xi, 315p.  cm. 
<br/><br/><label>Standard No.: </label>52359 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Agriculture
<br/><br/><label>Dewey Class. No.: </label>J:4:5p1,N56, J7