A guide to effective care in pregnancy and childbirth / Murray Enkin, Marc J.N.C. Keirse, Iain Chalmers ; with the editorial assistance of Eleanor Enkin. Enkin, Murray. Keirse, Marc J. N. C. Chalmers, Iain. Enkin, Eleanor. Prenatal care. Labor (Obstetrics) Labor. Prenatal care. RG940 .E55 1989 618.2/4 20 Oxford [England] ; New York : Oxford University Press, 1989. 1989. 1989 Text xiii, 376 p. ; http://www.loc.gov/catdir/enhancements/fy0637/89022820-d.html http://www.loc.gov/catdir/enhancements/fy0637/89022820-t.html eng Oxford medical publications