Johnson, W. H. <br/><br/>
The cultivation and preparation of Pará rubber 

 - 2 ed. 
 - London :  Crosby Lockwood,  1909 
 - 178 p.  : ilus 
<br/><br/><label>LCCN: </label>17321 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Caucho.<br/>Hevea.<br/>Latex.
<br/><br/><label>Dewey Class. No.: </label>634.9865  / J64 1909