000 00319nam a2200133Ia 4500
008 230108s9999 xx 000 0 und d
100 _aFestinger L & Katz D
245 0 _aResearch Methods in the Behavioral Sciences
260 _bAmerind
260 _c1953
365 _b17.00
650 _aExtension
942 _cBK
999 _c239642
_d239642