Possibilities for Pará rubber production in northen tropical America 

 - Washigton :  Government Printing Office,  1926 
 - 375 p.  : ilus. 
 - Trade promotion series  ; 40 .
 - Trade promotion series  ; 40 .
<br/><br/><label>LCCN: </label>39797 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Agricultura--Aspectos economicos--America Latina.<br/>Caucho.<br/>Cultivos tropicales.
<br/><br/><label>Dewey Class. No.: </label>338.173895  / E83