Johnson, George Orville,  1915- <br/><br/>
Learning performance of retarded and normal children / 
G. Orville Johnson [and] Kathryn A. Blake 
 - Syracuse :  The University Press,  c1960 
 - xviii, 216 p. :  ill. ;  23cm. 
 - Special education and rehabilitation monograph series ;  v.5 .
<br/><br/><label>ISBN: </label> USD 5.00 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Learning, Psychology of
<br/><br/><label>Dewey Class. No.: </label>154.4