Thomas, J. A. G. <br/><br/>
An introduction to geological maps 

 -  George Allen and Unwin  1966 
 - 67p.  ill.  25cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geology
<br/><br/><label>LC Class. No.: </label>PAM QE36.T46