TSitologiya i Genetika 1989, vol. 23, no. 4, 30-36 Cytology and Genetics , vol. , no. , , doi: https://www.doi.org/ Phenotypical Peculiarities of a Heterogeneous Group of Children Who Are Often Ill Mazalevsky A. F. Keywords: TSitologiya i Genetika 1989, vol. 23, no. 4, 30-36 Cytology and Genetics , vol. , no. , , doi: Full text and supplemented materials References