[Ultrasonic echography in obstetrics].
D005260:Female; D005315:Fetal Diseases; D005865:Gestational Age; D006801:Humans; D006828:Hydatidiform Mole / Q000175:diagnosis; D008722:Methods; D011247:Pregnancy; D011248:Pregnancy Complications / Q000175:diagnosis*; D014427:Twins; D014465:Ultrasonics
L'echographie ultrasonique en obstetrique.