Iivanainen, Matti <br/><br/>
A study on the origins of mental retardation/ 
Matti Iivanainen 
 - London  Heinemann  1974 
 - 173 p. :   ill. ;   25 cm. 
 - Clinics in developmental medicine  no.51 .
<br/><br/><label>ISBN: </label>0433163003 
<br/><br/><label>LCCN: </label>75-316654 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mental retardation<br/>Diseases--Causes and theories of causation