Determination of biological age in different periods of human ontogenesis Journal title: Slobozans`kij Naukovo-Sportivnij Visnik [Slobozhanskyi Herald of Science and Sport] Authors: Oleksandr Aghyppo| Харьковская государственная академия физической культуры, Yaroslavna Puhach| Харь... Subject(s): Education, Sports and Recreation, Rehabilitation, Health and Wellness