000 00272nam a2200109Ia 4500
008 230130s1971 xx 000 0 und d
041 _aeng
082 _a150
100 _aWertheimer, M.
_91471082
245 _aPsychology
260 _aLondon
_bScott Foresman & Company
_c1971
999 _c953623
_d953623