ENGEL, A M <br/><br/>
The Detroit in-service training.  [electronic resource] 

 -  American journal of mental deficiency  Apr 1947 
 - 696-700 p.  digital 
<br/><br/> Publication Type: Journal Article 
<br/><br/><label>ISSN: </label>0002-9351 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Humans