13th European congress of perinatal medicine, Amsterdam, May 12-15, 1992 : abstracts / edit. Janna G. Koppe. -- Vol. 20, Suppl. 1 (1992). -- Berlin : De Gruyter, 1992. -- 371 s. -- (Journal of Perinatal Medicine ; Suppl. 1).
perinatológia * kongresy ako téma