Wertheimer, M. <br/><br/>
Productive thinking 
Edited by Michael Wertheimer 
 - Great Britain  Tavistock Publication  1945 
 - xvi, 302 p.:  ill.;  22 cm. 
<br/><br/> Includes bibliography references and index 
<br/><br/><label>ISBN: </label>422720801 
<br/><br/><label>LC Class. No.: </label>DUCE BF203.W45