[Pelvic presentation in the primipara. (Experience of the Maternidad del Hospital del Salvador during the period 1955-1958)].
D005260:Female; D006761:Hospitals; D006801:Humans; D007746:Labor Presentation / Q000706:statistics & numerical data*; D010298:Parity; D010388:Pelvis; D011247:Pregnancy
LABOR PRESENTATION/statistics