TY  - BOOK
AU  - Polit,Denise F.
AU  - Hungler,Bernadette P.
TI  - Essentials of nursing research: methods, appraisal, and utilization 
SN  - 0397553684
PY  - 1997///
CY  - Philadelphia
PB  - Lippincott
KW  - Nursing Research
KW  - methods
ER  -