TY  - BOOK
AU  - Polit, Denise F.
TI  - Nursing research: principles and methods 
SN  - 0781715628
U1  - FOR 610.73 P76m 1999 
PY  - 1999///
CY  - Philadelphia
PB  - Lippincott
KW  - Nursing
KW  - Research
KW  - Methodology
ER  -