000 00283nam a2200121Ia 4500
008 160710s1960 xx 000 0 und d
082 _a620.1 SKI
100 _aSKINNER (CE)
245 _aEDUCATIONAL PSYCHOLOGY
260 _bORIENT LONGMANS
_c1960
300 _a358
942 _2ddc
_cB
999 _c51873
_d51873