TY  - RPRT
TI  - NORMAL LABOR IN VERTEX PRESENTATION.
AU  - L A CIBILS
AU  - C H HENDRICKS
PY  - 1965
DO  - 10.1016/0002-9378(65)90254-1
UR  - https://pubmed.ncbi.nlm.nih.gov/14258266/
ID  - 14258266
ER  -