TY - BOOK AU - Callen, Peter W. TI - Ultrasonography in obstetrics and gynecology SN - 9781416032649;9788131212837 PY - 2008/// CY - Philadelphia PB - Saunders Elsevier KW - Genital Diseases, Female KW - Ultrasonography, Prenatal KW - Fetal Diseases KW - Fetal Monitoring KW - Obstetrics N1 - Includes bibliographical references and index ER -