Radcliffe, Daryl E. <br/><br/>
Continuous recorder to monitor mine roof displacement (BM-TPR 104) 
Radcliffe, Daryl E. 
 - Washington  Bureau of mines  1977 
<br/><br/><label>Subjects--Topical Terms: </label><br/>TECNOLOGIA MINERA
<br/><br/><label>Universal Decimal Class. No.: </label>622.06