00623naa#a2200169#i#450# EN\\bibl\123390 20260706105200.1 1994-4683 20230731b2023####ek#y0engy0150####ca RU MODERN REQUIREMENTS FOR THE FITNESS OF STAYER SWIMMERS Journal article Moscow National State University of Physical Education, Sports and Health named after P.F. Lesgaft 2023 3 с. Journal article local Вольный стиль. Кроль, например,. 797.212.4 Karpova Svetlana Nikolaevna uchzapiski.lesgaft.spb.ru