Interregional seminar on the application of advanced mining technology 

 - New  York UN        1975 
 - 335p  cm. 
<br/><br/><label>Standard No.: </label>152060 
<br/><br/><label>Source: </label> Reference Collections 
<br/><br/><label>Dewey Class. No.: </label>"X9(Hz)0gFp1,N73, L5/UN"