An introduction to mental retardation
Ehlers, Walter H.
An introduction to mental retardation a programmed text Walter H. Ehlers, Curtis H. Krishef, Jon C. Prothero. - 2d ed. - Columbus, Ohio Merrill c1977. - xv, 384 p.
Includes bibliographies and index.
0675085268
76049380 //r842
Mental Retardation--Programmed instruction.
Mentally handicapped children--Services for--Programmed instruction.--United States
Developmental disabilities--Programmed instruction.
RC570 / .E34 1977
362.3/07/7
An introduction to mental retardation a programmed text Walter H. Ehlers, Curtis H. Krishef, Jon C. Prothero. - 2d ed. - Columbus, Ohio Merrill c1977. - xv, 384 p.
Includes bibliographies and index.
0675085268
76049380 //r842
Mental Retardation--Programmed instruction.
Mentally handicapped children--Services for--Programmed instruction.--United States
Developmental disabilities--Programmed instruction.
RC570 / .E34 1977
362.3/07/7