TY - BOOK AU - POLIT D.F.,BECK C.T. TI - ESSENTIALS OF NURSING RESEARCH APPRAISING EVDIENCE FOR NURSING PRACTICE SN - 978-81-8473-219-1 U1 - 610.73 PY - 2009/// CY - PB - LIPPINCOTTT WILLAMA & WILKINS, WOLTERS KIUWER. KW - NULL ER -