Bieniawski, Z. T. <br/><br/>
Engineering rock mass classifications :  a complete manual for engineers and geologists in mining, civil, and petroleum engineering / 
Z.T. Bieniawski. 
 - New York :  Wiley,  c1989. 
 - xii, 251 p. :  ill. (some col.) ;  24 cm. 
<br/><br/> "A Wiley-Interscience publication." 
<br/><br/>Includes bibliographical references (p. 239-248) and index. 
<br/><br/><label>ISBN: </label>0471601721 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geology, Economic.<br/>Rocks--Classification.<br/>Rock mechanics.
<br/><br/><label>Dewey Class. No.: </label>624.15132  / BIE