RT Book, Section A1 Cunningham, F. Gary A1 Leveno, Kenneth J. A1 Bloom, Steven L. A1 Dashe, Jodi S. A1 Hoffman, Barbara L. A1 Casey, Brian M. A1 Spong, Catherine Y. SR Print(0) ID 1160771636 T1 Maternal Anatomy T2 Williams Obstetrics, 25e YR 2018 FD 2018 PB McGraw-Hill Education PP New York, NY SN 9781259644320 LK obgyn.mhmedical.com/content.aspx?aid=1160771636 RD 2024/04/20 AB As the mechanism of labour is essentially a process of accommodation between the foetus and the passage through which it must pass, it is apparent that obstetrics lacked a scientific foundation until the anatomy of the bony pelvis and of the soft parts connected with it was clearly understood.—J. Whitridge Williams (1903)