000			00494nam a22001697a 4500
999			_c6638 _d6638
008			200928b ||||| |||| 00| 0 eng d
020			_a1412965569
040			_cddc
082			_222 _a300.72
100			_aCreswell, John W.
245			_aResearch design: _b Qualitative, quantitative, and mixed methods approaches _cJohn W. Creswell
250			_aThird ed.
260			_alondon _bSage publications _c2009
300			_axxix, 260p. _bill. _c25cm.
500			_aincludes index
942			_2ddc _cBK