VOROBJEV Boris R <br/><br/>
Advanced coal mining   For mining students, mining engineers and colliery managers    
VOROBJEV Boris R; DESHMUKH Ramrao T 
 - Dhanbad  Kusum Deshmukh           1966 
 - 909p  cm. 
<br/><br/> Bibliography chapterwise; Appendix: P 515-20 
<br/><br/><label>Source: </label> General Book 
<br/><br/><label>Dewey Class. No.: </label>X9(HZ551).2.N6, K6.1-K6.2