TY - BOOK AU - Smith, N. C. AU - Smith, A. Pat M. TI - Obstetric ultrasound made easy SN - 044307013X AV - RG527.5.U48 S63 2002 PY - 2002/// CY - Edinburgh : New York PB - Churchill Livingstone KW - Ultrasonography, Prenatal KW - Embryonic Development KW - Fetal Development N1 - Includes bibliographical references (p. 177-178) and index ER -