1. Conversion of a vertex into a shoulder presentation by a Champetier balloon dilator: direct podalic version with recovery for both mother and child Author(s): Edgar, J. Clifton (James Clifton), 1859-1939, author Publication: [New York?] : [publisher not identified], [1893?] Subject(s): Obstetric Labor ComplicationsDilatation -- adverse effectsLabor PresentationVersion, Fetal