TY - JOUR A1 - H., Zellweger T1 - Familial aggregates of the 21-trisomy syndrome T2 - Annals of the New York Academy of Science, Vol. 155 (1969), pp. 784-792. Y1 - 1969 UR - https://opus4.kobv.de/opus4-Fromm/frontdoor/index/index/docId/30666 N1 - Ex libris Marco Bacciagaluppi ER -