Wertheimer Max <br/><br/>
Productive thinking 

 -  1945 
<br/><br/><label>Standard No.: </label>79,680 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Subjects--Topical Terms: </label><br/>PSYCHOLOGY
<br/><br/><label>Dewey Class. No.: </label>S:44, H5