THOULON J.-M. 306,001 PROCEEDINGS Proceedings of the Xllth European Congress of Peri-­ natal Medicine Lyon, France, September 11-14, 1990 /org. by the French Society of Perinatal Medicine in cooperation with the European Association of Perina­- tal Medicine ; guest eds. J.-M. Thoulon, G. Putet. - Berlin ; New York t [Walter de Gruyter and Co. ], [1991]. - 416 s. ; 25 cm (Journal of Perinatal Medicine, ISSN 0936-174X ; vol. 19, suppl. 1) ISBN 3-11-012777-6