An anlaysis of learning efficiency in arithmetic of mentally retarded children in comparison with children of average and high intelligence
Subtitle: ... research ... performed pursuant to a contract with the United States Office of Education, Department of Health, Education, and Welfare
By: [by] Herbert J. Klausmeier, director; John Feldhusen, assistant director [and] John Check, research associate
Published: 1959
Place of publication: Madison?
Language: eng
Number of pages: 168
Subjects: Children with mental disabilities; Education; Mathematics; Study and teaching (Elementary)
Notes: Cover title.

Bibliography: leaves 130-134.