Polit Danise F., Hungler Bernadette P. Nursing research principles and methods - 3rd - Philidelphia J.B.Lippincott Company 1987 - 571p. 26cm. - . Nursing, Research ISBN: 0397546319 Subjects--Topical Terms: ResearchNursing Dewey Class. No.: WY20.5 / POL