TY - BOOK AU - Richards, Stephen B. AU - Brady, Michael P. AU - Taylor, Ronald L. TI - Cognitie and intellectua; disabilities: historical perspectives, current practices and future directions SN - 9780415834681 U1 - 616.8588/R39c PY - 2015/// CY - New York PB - Routledge KW - Mental retardation N1 - Bibliography:p.379-405 ER -