Allen, W. H. <br/><br/>
Geology :  made simple / 
W. H. Allen. 
 - [London]:   [s.n.],   [1977].  
 - 293 p. :  maps, ill., tables ;  22 cm. 
<br/><br/>Includes index (p. 289-293). 
<br/><br/><label>Subjects--Uniform Titles: </label><br/>Geology
<br/><br/><label>Dewey Class. No.: </label>551