000 00291nam a2200097Ia 4500
008 120224s9999 xx 000 0 und d
082 _a300.72
_bKIR
100 _aKirk, Jerome
245 _aRealibility and validity in qualiatative research
260 _bSage Publications
_aNew Delhi
_c1986
999 _c135382
_d135382