Silica in Canada;  its occurrence, exploitation and uses, 
by L. Heber Cole. 
 - Ottawa,  Government Printing Bureau,  1923-28. 
 - 2 v.  illus., plates, fold. maps, tables.  25 cm. 
<br/><br/> At head of title, pt. I-II: Canada. Department of Mines. Hon. Charles Stewart, minister; Charles Camsell, deputy minister. Mines branch, John McLeish, director.  Seven folded maps in pocket of pt. I.  No. 555, 686. 
<br/><br/>pt. I. Eastern Canada.--pt. II. Western Canada. 
<br/><br/><label>LCCN: </label>gs 23000240  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Silica.
<br/><br/><label>LC Class. No.: </label>TN948.S6  / C3 1923