000 00333nam a2200121Ia 4500
008 211105s9999 xx 000 0 und d
020 _aVYASA10615
100 _aPeter Mittler
245 0 _aResearch To Practice In Mental Retardation Vol 1 Care And Intervention
250 _a\N
260 _bUniversity Park Press
_c\N
300 _a472p.
999 _c3986
_d3986