Posner, Glenn D. Human labor & birth / Glenn D. Posner, Jessica Dy, Amanda Y. Black and Griffith D. Jones - Sixth edition. - xiii, 782 pages : colored illustration ; 23 cm. Includes bibliographical references and index. ISBN: 9780071740289 Subjects--Topical Terms: Midwifery--Human labor and birth LC Class. No.: Allied RG 651 / P67 2013