An introduction to mental retardation
Subtitle: a programmed text
By: Walter H. Ehlers, Curtis H. Krishef, Jon C. Prothero.
Contributors: Krishef, Curtis H., joint author.; Prothero, Jon C., joint author.
Edition: 2d ed.
Publisher: Merrill
Published: 1977
Place of publication: Columbus, Ohio
Language: eng
Number of pages: 384
Subjects: Mental retardation -- Programmed instruction.; Developmental disabilities -- Programmed instruction.; Children with mental disabilities -- Services for -- United States -- Programmed instruction.
Notes: Includes bibliographies and index.