| Literature DB >> 14341194 |
W L JOHNSON, H F STEGALL, J N LEIN, R F RUSHMER.
Abstract
Entities:
Keywords: BLOOD CIRCULATION; EQUIPMENT AND SUPPLIES; FETAL HEART; HEART AUSCULTATION; PREGNANCY; PULSE; ULTRASONICS
Mesh:
Year: 1965 PMID: 14341194
Source DB: PubMed Journal: Obstet Gynecol ISSN: 0029-7844 Impact factor: 7.661