000 00441nam a2200193Ia 4500
008 230524s9999 xx 000 0 und d
040 _cUDSM
050 _aLB1025.2.P4
100 _aPerry, George W
245 0 _aCase studies in teaching
260 _aLondon
260 _bPitman
260 _c1969
300 _avi,129p.
300 _c18cm.
650 _aTeaching
942 _2Library of Congress Classification
942 _cBook
999 _c99482
_d99482