Piliot O' Hara, Denise Nursing research principle and methods by Denise piliot O Hara, Bernadette P.. - 3rd ed.. - Philadelphia J.B. Lippincott 1987 - xvii, 571p.; 23cm. ISBN: 397546319 Subjects--Topical Terms: Nursing - Redearch - Methodology. Dewey Class. No.: 610.73 / P24N