Howells M F <br/><br/>
Snowdonia/ 
M. F. Howells, B. E. Leveridge, A. J. Reedman. 
 - London:  Unwin paperbacks,  1981. 
 - 119p.  ill;  19 cm. 
<br/><br/><label>ISBN: </label>0045540055 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geology
<br/><br/><label>LC Class. No.: </label>QE262