SERES-SANTAMARIA AGUSTI 304.913 ABSTRACTS Abstracts of the International Conference on Chromosome 21 and Medical Research on Down Syndrome March 14-15, 1997 Barcelona, Spain / guest eds. Agusti Seres-Santamaria, Montserrat Trueta. - [Basel] : Karger, 1997. - III, 36 s. ; 29 cm. - (Cytogenetics and Cell Genetics, ISSN 0301-0107 ; vol.77, suppl.1)