Tyrrell, G. W. <br/><br/>
The principles of petrology :  an introduction to the science of rocks / 
by G.W. Tyrrell. 
 - London :  Chapman & Hall,  1926. 
 - xii, 349 p. 
<br/><br/><label>ISBN: </label>041211500X 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Petrology.<br/>Rocks.<br/>Physical geology.