Ingalls Robert P. <br/><br/>
Mental retardation  the changing outlook 

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 - New York  John Wiley and sons  1978 
 - 491 p.  23 cm. 
 -   .
<br/><br/>  
<br/><br/>  Mental Retardation 
<br/><br/><label>ISBN: </label>0471427160 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mental Retardation
<br/><br/><label>Dewey Class. No.: </label>WM300  / ING