ANNUAL 300.265 18th Annual Clinical, Scientific, and Business Meeting of the Society of Perinatal Obstetricians February 2-7, 1998/ Officers President Steven L. Clark [et al] ; [Program Comm. James N. Martin, Jr.,Program chair et al]. - [St. Louis : by Mosby, Inc.], 1998. - XXII, 242 s. : wykr. ; 29 cm. - (American Journal of Obstetrics and Gynecology, ISSN 0002-9378 ; vol.178,nr 1,pt . 2 )