Spencer, Elizabeth Humphris <br/><br/>
Basic Concepts of Historical  Geology 
/ by Elizabeth Humphris Spencer 
 - New Delhi :  Oxford and IBH,  1962 
 - XV, 366 p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Earth Science
<br/><br/><label>Subjects--Facted Index Terms: </label><br/>Geology
<br/><br/><label>Dewey Class. No.: </label>551  / SPE-B