Tyrrell, G. W.  1883- <br/><br/>
The principles of petrology :  an introduction to the science of rocks / 
by G.W. Tyrrell 
 - New delhi :  B. L. publications PVT,  c1926. 
 - 349 p. :  ill. ;  10 cm. 
<br/><br/> Includes index. 
<br/><br/><label>ISBN: </label>8172250177 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Petrology.
<br/><br/><label>Dewey Class. No.: </label>552  / TYP