Mental retardation and behavioural research :  study group held at the University of Hull, under the auspices of the Institute for Research into Mental Retardation and with assistance from the Department of Education and Science / 
edited by A. D. B. Clar 
 - Edinburgh :  Churchill Livingstone,  1973 
 - xii, 279 p. ;  21 cm. 
 - Study Group .
<br/><br/> Includes index 
<br/><br/><label>ISBN: </label>044300952X :  PND 5.00 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mental retardationes<br/>Mental retardation--Researches
<br/><br/><label>Dewey Class. No.: </label>136.766