AU  - Polit,Denise F.
AU  - Hungler,Bernadette P.
TI  - Essentials of nursing research: methods, appraisal, and utilization 
SN  - 0397549229
PY  - 1993///
CY  - Philadelphia
PB  - Lippincott
KW  - Nursing
KW  - Research
KW  - Nursing Research
ER  -