Burchard, Ernest F. <br/><br/>
Cement in 1916. 

 - Washington, D.C.  Government Printing Office  1918 
 - pp. 341-375 
 - Mineral Resources of the United States, 1916-Part II .
<br/><br/> Impreso 
<br/><br/><br/>Ingles 
<br/><br/><label>Subjects--Topical Terms: </label><br/>MINERIA<br/>CEMENTO
<br/><br/><label>Dewey Class. No.: </label>553.68