Skinner Walter E. <br/><br/>
Mining yearbook 

 - London  1956 
 - 596p.  cm. 
<br/><br/> Note: Question Papers Available at Circulation Section 
<br/><br/><label>Standard No.: </label>201069 
<br/><br/><label>Source: </label> Reference Collections 
<br/><br/><label>Dewey Class. No.: </label>"HZn56,N, N56/RR"