Stability in coal mining :  Proceedings of the First International Smposium on Stability in Coal Mining Vancouver, British Columbia, Canada 1978 / 
edited by C. O. Brawner and Ian P. F. Dorling. 
 - San Francisco :  Miller Freeman Publications,  1979. 
 - 496 pages :  illustrations. 
 - World Coal Book .
<br/><br/> Includes index. 
<br/><br/>Reference: page 490. 
<br/><br/><label>ISBN: </label>0879301082 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Minas de carbón--Congresos.<br/>Coal mines--Congresses.
<br/><br/><label>Dewey Class. No.: </label>622.33