310,176 ABSTRACTS Abstracts of the 29th Annual Meeting Boston, Massachusets, June 12-15, 1996. - [Baltimore : by the Johns Hopkins University School of Hygiene and Public Health], 1996. - [2], 89, [5] s. ; 27 cm (American Journal of Epidemiology, ISSN 0002-9262 ; vol. 143, nr 11, suppl.)