TY - BOOK AU - Greenhill, J. P. AU - Friedman, Emanuel A. TI - Biological Principles and Modern Practice of Obstetrics U1 - 618.2 PY - 1974/// CY - Tokyo PB - W.B. Saunders KW - Biological - Methods KW - Obstetrics KW - Pregnancy - Diagnosis N1 - Includes bibliographical references and index ER -