TY  - BOOK
AU  - Polit, Denise F.
AU  - 
AU  - Beck, cheryl T.
TI  - Essentials of nursing research: methods, appraisal and utilization
SN  - 0-7817-4972-7
U1  - 610.73072 P769 2006 
CY  - Philadelphia
PB  - Lippincott Williams & Wilkins.
KW  - Nursing
KW  - Research
ER  -