Understanding the earth :  a reader in the earth sciences / 
edited by I. G. Gass, Peter J. Smith, R. C. L. Wilson at the Open University. 
 - 2nd ed. 
 - Sussex :  Published for the Open University by the Artemis Press,  1972 [ Reprinted 1973 ]. 
 - 383 p. :  ill. ;  26 cm. 
<br/><br/>Includes bibliographical references and index. 
<br/><br/><label>ISBN: </label>0851413080 (pbk.) 0851413099 (library ed.) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Earth sciences.
<br/><br/><label>Dewey Class. No.: </label>550  / UND 1973