Fraser, F.  <br/><br/>
Knapsack sprayers: use, maintenance, accessories  (Book) 

 - Oregon  International Plant Protection Center  1979 
 - 32 p.  28 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Knapsack sprayers
<br/><br/><label>Universal Decimal Class. No.: </label>632.94 FRA  / 3640