000 00295nam a2200085Ia 4500
245 0 _aResearch design : qualitative, quantitative, and mixed methods approaches
100 _a Creswell, John w. Los Angeles, [c.2009] 3rd ed
_977762
942 _cBK
008 210817s9999 xx 000 0 und d
999 _c266840
_d266839