Cochran, William <br/><br/>
Mine subsidence-extent and cost of control in a selected area 

 - Washington :  U.S. Bureau of Mines,  1971 
 - 32 p. 
 - Information circular ;  no. 8507 .
 - United States.  Bureau of Mines.  Information circular ;  no. 8507 .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Subsidences (Earth movements)
<br/><br/><label>LC Class. No.: </label>TN295  / U4 no. 8507