Hoek, Evert,  1933- <br/><br/>
Underground excavations in rock / 
E. Hock, E.T. Brown 
 - London :  Institution of Mining and Metallurgy,  1980 
 - 527 p. :  ill. ;  28 cm. 
<br/><br/>
<br/><br/><label>ISBN: </label>0900488557 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Excavation<br/>Rock mechanics<br/>Underground areas