PROGRESS IN CLINICAL AND BIOLOGICAL RESEARCH ; VOL. 311 547,766 Molecular and cytogenetics studies of non-disjunction : proceedings of the Fifth Annual National Down Syndrome Society Symposium, Held in New York, NY, December 1-2, 1988 / ed. Terry J. Hassold, Charles J. Epstein. - New York : Alan R. Liss, Inc., [1989]. -XV, [1], 360 s. : il., wykr. ; 24 cm (Progress in Clinical and Biological Research ; vol. 311) ISBN 0-8451-5161-4