ISBN 0940898829 books & textbook
Workbook: Mental Retardation (10th Edition)
Ruth Luckasson Robert L. Schalock Deborah M. Spitalnik Scott Spreat Marc Tasse Martha E. Snell David L. Coulter Sharon A. Borthwick-Duffy Ruth A. Luckasson Luckasson, Ruth A.
American Association on Intellectual and Developmental Disabilities /2002-01-01 Paperback / 64 Pages
isbn-10: 0940898829 / isbn-13: 9780940898820