000 00304nam a2200121Ia 4500
008 220204s9999 xx 000 0 und d
082 _a3.001.5
_bSEL
100 _aSelltiz, C
245 0 _aResearch methods in social relations
250 _aEd.3
260 _aNew York
_bHolt, rinehart
_c1976
942 _cBK
999 _c28149
_d28149