Christenson, Reo M. <br/><br/>
Challenge and decision 

 - New York   : Harper and Row Publishers,  1970 
 - xii, 301p.   : ill.   ; 20cm. 
<br/><br/>Includes bibliography 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Includes bibliography
<br/><br/><label>LC Class. No.: </label>E743.C49