Tarr, W. A. <br/><br/>
Introduction to economic geology / 
W.A. Tarr. 
 - 2nd ed. 
 - New York ;  London :  McGraw-Hill,  1938. 
 - xi, 645 p. :  ill. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geology, Economic.