000			00376pab a2200145 454500
008			180718b1988 xxu||||| |||| 00| 0 eng d
100			_aMac Man Us, Susan A
245			_aThe missing element _bAn examination of anlytic time frames
260			_c1988
300			_a39-45
362			_aSept.
650			_aUrban Research
773			_aUrban Affairs Quarterly
909			_a20142
999			_c20142 _d20142