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080 _a001.8
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100 _aCreswell, John W.
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245 _aResearch design
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300 _axxix, 260p.
653 _aResearch methodology
653 _aResearch design
653 _aQuantitative methods
942 _cBK
260 _aLos Angeles
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020 _a9788132107484
952 _w2012-01-16
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