ISBN-13: 9781138519329 / Angielski / Twarda / 2017 / 379 str.
ISBN-13: 9781138519329 / Angielski / Twarda / 2017 / 379 str.
In this important book, one of the most exciting and promising developments in clinical psychology-behavior modification is applied to the treatment of the mentally retarded, particularly those whose behavior poses difficult problems for institutions