000 00418nam a2200145Ia 4500
008 180710s9999 xx 000 0 und d
020 _a76515
082 _a400
_bLan
100 _aSchefelbusch, Richard L., ed.
245 _aLANGUAGE and mental retardation: empirical and conceptual considerations
260 _aNew York
_bHolt, Rinehart and Winston
_c1976
300 _ax, 208 p.
650 _aLanguage
942 _cS
999 _c69189
_d69189