000 00424nam a2200157Ia 4500
999 _c27624
_d27624
005 20210706153631.0
008 180712s9999 xx 000 0 und d
020 _a851170757
082 _223
_a373.12
_bDAV
100 _aDAVIS, R.Peter
245 _aMixed ability grouping: possibilities and experiences in the secondary school
260 _aLondon
_bTemple Smith
_c1975
300 _a214 p.
509 _aNS
942 _cS