312,803 PROCEEDINGS Proceedings of the International Conference on Prevention of Hib Meningitis in the 1990s Barcelona, 22 May 1990 / editorial P. D. Walker. - [Oxford] : [Butterworth-Heineman], 1991. - 46 s. : wykr. ; 30 cm (Vaccine, ISSN 0264-410X ; vol. 9 ; suppl.)