00609naa#a2200169#i#450# EN\\bibl\127457 20260709102248.4 1994-4683 20230930b2023####ek#y0engy0150####ca RU METHODS OF TRAINING WINTER SWIMMING CLASSES Journal article Moscow National State University of Physical Education, Sports and Health named after P.F. Lesgaft 2023 4 с. Journal article local Плавание без вспомогательных средств. 797.21 Mordovtsev M G uchzapiski.lesgaft.spb.ru