TY - BOOK AU - Polit,Denise F. AU - Beck,Cheryl Tatano TI - Essentials of nursing research: appraising evidence for nursing practice SN - 9781451176803 (pbk.) : U1 - 610.73072 23 PY - 2013/// CY - Philadelphia, Pennsylvania PB - Lippincott Williams & Wilkins KW - KW - Nursing KW - Research KW - Methodology KW - Evaluation N1 - Previous edition: 2010; Includes Internet access; Includes bibliographical references and index ER -