Understanding the earth :  a reader in the earth sciences / 
edited by I.G. Gass, Peter J. Smith, R.C.L. Wilson. 
 - 2nd edition. 
 - Sussex :  The Artemis Press Limited,  1972. 
 - 383 pages :  illustrations ;  26 cm. 
<br/><br/><label>ISBN: </label>0851413080 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geology--Addresses, essays, lectures.