000 00287nam a2200097Ia 4500
008 230131s9999 xx 000 0 und d
100 _aPolit, Denise F.
245 0 _aNursing research: principles and methods
260 _aPhiladelphia
_bLippincott Williams & Wilkins
_c2004
942 _cPRCD
999 _c170746
_d170745