Tyrrell, G. W. <br/><br/>
Principles of petrology : introduction to the science of rocks. 

 -  1926 
<br/><br/> U.G.C. 8th plan 
<br/><br/><label>Subjects--Topical Terms: </label><br/>NO SUBJECT
<br/><br/><label>Dewey Class. No.: </label>552  / TYR/Pri