000			00287nam a22001217a 4500
999			_c496892 _d496892
082			_a300.72 _bSPE
100			_aSpector, Paul E
245			_aResearch Design
260			_aUK _bSage _c1981
300			_a80
490			_aQuantitative Applications in the Social Sciences 23
942			_cBK