Balkwill, h. R. <br/><br/>
Simpson lake map-area, district of Mackenzie /  
H.R. Balkwill and C.J. Yorath. 
 -   19. 
 - v, 10 p. :    ill., plates, map (in pocket) ;    25 cm. 
 - Geological Survey of Canada /paper ;    69-10 .
<br/><br/>Includes bibliographical references. 
<br/><br/><label>Subjects--Topical Terms: </label><br/> Geology -- Northwest Territories -- Simpson Lake Region.
<br/><br/><label>Gov. Doc. Class. No.: </label>G. CAN E61 (08) 2/69-10