Proceeding on Canadian rock mechanics 

 -  1972 
 - viii,214p.  cm. 
<br/><br/><label>Standard No.: </label>49618 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Subjects--Topical Terms: </label><br/> Igneous rocks<br/>Geology
<br/><br/><label>Dewey Class. No.: </label>H21p72,N71, L2