Rock bolting :  a practical handbook / 
edited by R. Schach, K. Garshol and A.M. Heltzen. 
 - Oxford :  Pergamon Press,  1979. 
 - 84p. :  ill. ;  22 cm. 
 - Pergamon international library of science, technology, engineering, and social studies .
<br/><br/><label>ISBN: </label>0080225039 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Rock bolts.