Problem-solving processes of mentally retarded children/ 
editor: Sandra P. Clarkson. 
 - Chicago ;  School Mathematics Study Group, Stanford University and Survey of Recent East European Mathematical Literature, University of Chicago,  1975. 
 - xiii, 170 p. ;  26 cm. 
 - Soviet Studies in the psychology of learning and teaching Mathematics  vol. 9. .
<br/><br/> On cover: National Council of Teachers of Mathematics. 
<br/><br/>Includes bibliographical references. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematics---Study and teaching<br/>Mathematics---Problems, exercises, etc.<br/>Mentally handicapped children---Education
<br/><br/><label>Dewey Class. No.: </label>372.7  / P962