Welchew, Edward. Patient controlled analgesia / Edward Welchew ; edited by C.E.W. Hahn, A.P. Adams. - London : BMJ Pub. Group, 1995. - viii, 133 p. : ill. ; 24 cm. - Principles and practice series. . Includes bibliographical references and index. ISBN: 072790860X Subjects--Topical Terms: Analgesia, Patient-Controlled.--drug therapy.------Pain, Postoperative --administration & dosage.------Analgesics -------- National Library of Medicine Call No.: WO 184 / W446p 1995