Grimwade, J C Human fetal heart rate change and movement in response to sound and vibration. [electronic resource] - American journal of obstetrics and gynecology Jan 1971 - 86-90 p. digital Publication Type: Journal Article ISSN: 0002-9378 Standard No.: 10.1016/0002-9378(71)90839-8 doi Subjects--Topical Terms: FemaleFetal Heart--physiologyHeart RateHumansPregnancySoundVibration