Abraham, Herbert <br/><br/>
Asphalts and allied substances  Herbert Abraham. 

 - 6th ed. 
 - New Jersey  D. Van Nostrand  1960 
 - xiii, 370p.: ill. 25cm. 
<br/><br/>Contents:V.1 Historical review and natural matenal. Includes index. 
<br/><br/><label>Dewey Class. No.: </label>691.96  / A15A