306,001 PROCEEDINGS Proceedings of the XIIth European Congress of Perinatal Medicine Lyon, France, September 11-14, 1990 /org. by the French Society of Perinatal Medicine in cooperation with the European Association of Perinatal Medicine; guest eds. J.-M. Thoulon, G. Putet. -Berlin ; New York : [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