Repsher, Richard C. <br/><br/>
Long-term rock noise plotting techniques / 
by Richard C. Repsher and D. Jan Black. 
 - Pgh. [i.e. Pittsburgh] Pa. :  U.S. Dept. of the Interior, Bureau of Mines,  [1979] 
 - 10 p. :  ill. ;  27 cm. 
 - Report of investigations ;  8399 .
 - Report of investigations (United States. Bureau of Mines) ;  8399. .
<br/><br/>Bibliography: p. 10. 
<br/><br/><label>LCCN: </label>79016190  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Coal mines and mining--Safety measures.<br/>Rock noise--Measurement.
<br/><br/><label>LC Class. No.: </label>TN23  TN295  / .U43 no. 8399 
<br/><br/><label>Dewey Class. No.: </label>622/.08 s  622/.33