Farmer, Ian <br/><br/>
Coal mine structures / 
Ian Farmer 
 - London :  Chapman and Hall,  1985 
<br/><br/><label>ISBN: </label>0412250306 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Coal Mines and Mining<br/>Ground control (Mining)
<br/><br/><label>Dewey Class. No.: </label>622.334  / FAR