TY - BOOK AU - Callen,Peter W. TI - Ultrasonography in obstetrics and gynecology SN - 0721681328 AV - RG527.5.U48 U47 2000 PY - 2000/// CY - Philadelphia PB - Saunders KW - Ultrasonics in obstetrics KW - Generative organs, Female KW - Obstetrics KW - Fetal Diseases KW - Fetal Monitoring KW - Genital Diseases, Female KW - Ultrasonography, Prenatal ER -