Martin, H.  <br/><br/>
Guide to the chemicals used in crop protection  (Book) 

 - 3rd ed. 
 - Ontario  Department of Agriculture  1957 
 - 306 p.  28 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Pesticides--Handbooks, Manuals, etc.
<br/><br/><label>Universal Decimal Class. No.: </label>632.95 MAR  / 3694