Robert C Beck  <br/><br/>
Motivation: theories and principles/ 
by Robert C Beck 
 - New Jersey:  PHI,  1990. 
 - 414p. 
<br/><br/><label>ISBN: </label>9780136030775 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Motivation<br/>Psychology
<br/><br/><label>Dewey Class. No.: </label>153.8  / ROB/M