Whaley, W.G.  <br/><br/>
Rubber heritage of the American tropics  (Book) 

 - United States  Department of Agriculture  1946 
 - 31 p.  25 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Rubber--United States
<br/><br/><label>Universal Decimal Class. No.: </label>678(091) WHA  / 12392