Internationl symposium on mining research :  proceedings of a symposium held at the University of Missouri, February 1961 / 
edited by George B. Clark 
 - Oxford :  Pergamon Press,  1962 
 - 2v. ;  23 cm. 
<br/><br/><label>ISBN: </label> PND 10.00 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Coal mines and mining--Research<br/>Mining--Research
<br/><br/><label>Dewey Class. No.: </label>622.072