TY - BOOK AU - Polit, Denise F. AU - Hungler, Bernadette P. ED - ED - ED - ED - TI - : principles and methods SN - 0-7817-1562-8 (alk. paper) SN - 2 PY - 1999///.;1999.46 CY - Philadelphia, Pennsylvania PB - Lippincott KW - KW - 2 KW - 0 KW - 6 KW - 20 KW - Research;Methodology.;methods KW - Nursing;Nursing Research N1 - Includes bibliographical references and indexes; 5 ER -