000 00316nam a2200121Ia 4500
008 140317s9999 xx 000 0 und d
082 _a307.2
100 _aFestinger,Leon
245 _aResearch methods in the behavioral sciences.
260 _aNY
_bHolt Rinehart and Winston
_c1953
300 _a660
942 _2ddc
_cBK
999 _c1318
_d1318