TY - BOOK ED - American Association on Mental Retardation. TI - Mental retardation: definition, classification, and systems of supports SN - 0940898810 AV - RC570 .C515 2002 PY - 2002/// CY - Washington, D.C. PB - American Association on Mental Retardation KW - Mental retardation KW - Classification N1 - Includes bibliographical references and indexes UR - http://www.loc.gov/catdir/toc/fy034/2002066469.html ER -