Legget R F <br/><br/>
Geology and engineering 

 - 2nd 
 -  1962 
 - p.  cm. 
<br/><br/><label>Standard No.: </label>45144 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geology
<br/><br/><label>Dewey Class. No.: </label>HOD, K21;1