Mental retardation: environmental hazards :  proceedings of symposia 9, 10 and 11 held at the Middlesex Hospital School on 11 June and 19 November 1971 and 10 March 1972 under the auspices of the Institute for Research into Mental Retardation / 
edited by Barbara E. Clayton. 
 - London :  Butterworths [for] the Institute for Research into Mental Retardation,  1973. 
 - Institute for Research into Mental Retardation. Symposia 9, 10 and 11 .
 - Institute for Research into Mental Retardation. Symposium ;  Institute for Research into Mental Retardation. Symposium ;  9, 10, 11. .
<br/><br/>Includes bibliographies and index. 
<br/><br/><label>ISBN: </label>0407268022  L.2.50 
<br/><br/><label>LCCN: </label>73595632 //r84 
<br/><br/><label>Nat. Bib. No.: </label>GB73-12280 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mental retardation -- Congresses.--Mental retardation -- Congresses.<br/>Mental retardation -- Etiology -- Congresses.--Mental retardation -- Etiology -- Congresses.--Mental retardation -- Etiology -- Congresses.
<br/><br/><label>LC Class. No.: </label>RC570  / .M416 
<br/><br/><label>Dewey Class. No.: </label>616.8/588/071 
<br/><br/><label>National Library of Medicine Call No.: </label>W3 IN1044L no. 9-11 1972  WM300 M552 1972