Clayton Barbara, Symposia on Mental Retardation(9th, 10th, 11th : 1971: London) , Institute for Research into Mental Retardation  <br/><br/>
Mental retardation  environmental hazards 

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 - London  Butterworths  1973 
 - 112 p.  22 cm. 
 -   .
<br/><br/>  Based on : Proceedings of Symposia 9, 10 and 11 held at the Middlesex Hospital Medical School on 11 June and 19 November 1971 and 10 March 1972 under the auspices of the Institute for Research into Mental Retardation, London 
<br/><br/>  Mental Retardation, Environment 
<br/><br/><label>ISBN: </label>0407268022 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Environment<br/>Mental Retardation
<br/><br/><label>Dewey Class. No.: </label>WM300  / CLA