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020 _a1506386709
020 _a9781506386706
041 _aeng
050 _aH62
_b.C6963 2018
100 _aCreswell, John W.
245 0 _aResearch design :
_bqualitative, quantitative, and mixed methods approaches/
_cJohn W. Creswell, J. David Creswell
250 _a5th ed.
260 _aThousand Oaks, California :
_bSAGE Publications, Inc.,
_c2018
300 _axxv, 275 p. :
_bill. ;
_c26 cm.
650 _aResearch Design.
650 _aSocial sciences Research Methodology.
650 _aSocial sciences Statistical methods.
700 _aCreswell, J. David
999 _c37968
_d37968