[The use of ultrasonics in obstetrical practice].
D005260:Female; D005315:Fetal Diseases / Q000175:diagnosis; D006801:Humans; D011247:Pregnancy; D011248:Pregnancy Complications / Q000175:diagnosis; D011296:Prenatal Diagnosis / Q000379:methods*; D014463:Ultrasonography
Primenenie ul'trazvuka v akusherskoĭ praktike