Cummings, John Moss,  1910- <br/><br/>
Clay and shale deposits of British Columbia, 
by J.M. Cummings and J.W. McCammon. 
 - Victoria,  Printed by D. McDiarmid, Printer to the Queen,  1952. 
 - 64 p.  illus., maps (part fold.)  26 cm. 
 - Bulletin,  no. 30 .
 - Bulletin (British Columbia. Department of Mines) ;  no. 30. .
<br/><br/> At head of title: British Columbia Department of Mines. 
<br/><br/>Bibliography: p. 45. 
<br/><br/><label>LCCN: </label>gs 52000248  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Clay--British Columbia.<br/>Shale--British Columbia.
<br/><br/><label>LC Class. No.: </label>TN27  / .B72 no. 30 
<br/><br/><label>Dewey Class. No.: </label>553.61