000 00277nam a2200109Ia 4500
008 170711s9999 xx 000 0 und d
050 _a610.73 P769
100 _a"Polit, Denise"
245 0 _aNursing research: principles and methods
260 _c1999
942 _2lcc
_cBK
_kCirc.
999 _c20731
_d20731