000 00313nam a2200133Ia 4500
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008 250113s9999 xx 000 0 und d
041 _aeng
082 _aY1m7376:M95
245 _aAmerican journal of sociology : Vol.63
260 _c1963
_aChicago
300 _a694p
365 _cRs.
999 _c137252
_d137252