Hoffer, Raimund. <br/><br/>
A practical treatise on caoutchouc and gutta percha 

 - Philadelphia :  Henry Carey Baird,  1883 
 - 278 p. 
<br/><br/><label>LCCN: </label>16123 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Caucho.
<br/><br/><label>Dewey Class. No.: </label>678.2  / H6