000 00354nam a2200157Ia 4500
008 131111s9999 xx 000 0 und d
100 _aDrew,Clifford J
245 _aMental retardation
260 _aNew York
260 _bMacmillan
260 _c1990
300 _a516p.
650 _aSpecial education
_aEducation
763 _a13835
942 0 0 _05
999 _c48468
_d48468