000 00274nam a2200097Ia 4500
008 180820s9999 xx 000 0 und d
050 _aC 610.73 P759n 2004
100 _aPolit, Denise F./ Beck, CherylTatano
245 0 _aNursing research : principles and methods
942 _cBK
999 _c63240
_d63240