000
00274nam a2200097Ia 4500
008
180820s9999 xx 000 0 und d
050
_a
C 610.73 P759n 2004
100
_a
Polit, Denise F./ Beck, CherylTatano
245
0
_a
Nursing research : principles and methods
942
_c
BK
999
_c
63769
_d
63769