000 00300nam a2200121Ia 4500
100 _aSellin, Donald F
020 _a0-205-05989-9
942 _cBK
245 _aMental retardation nature, needs, and advocacy
260 _aAllyn and Bacon,Inc, London
_c1979
082 _a362.3 Sel
300 _axv, 479
999 _c31571
_d31571