Penney Mark Embury <br/><br/>
Why knowledge of the laws of human behavior makes for success. 

 -  1920 
<br/><br/><label>Standard No.: </label>35342 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Subjects--Topical Terms: </label><br/>PSYCHOLOGY
<br/><br/><label>Dewey Class. No.: </label>S, F0