Davidson, Marshall B. <br/><br/>
Life in america. 

 - Second edition. 
 - Boston :  Houghton Mifflin Company, 
 - xv,573 pages. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Civilization.
<br/><br/><label>Subjects--Geographic Terms: </label><br/>United States.<br/>United States.