TY  - BOOK
AU  - Polit, Denise F.
AU  - Hungler,Bernadette P.
TI  - Essentials of nursing research: methods, appraisal and utilization 
SN  - 0397549229 (pbk.)
PY  - 1993///
CY  - Philadelphia
PB  - Lippincott
KW  - Nursing
KW  - Research
N1  - Includes index; Includes bibliographical references
ER  -