00705naa#a2200205#i#450# EN\INFRA-M\bibl\34753 /en/manage/index 20241203173456.2 2500-0489 20191225b2019####ek#y0engy0150####ca RU Health-saving education as a factor of additional education of children Journal article Moscow INFRA-M Academic Publishing LLC. 2019 5 с. Journal article local Общие вопросы математических и естественных наук. 50 Shpet V. V. Ovchinnikov Yu. D. Yakunina V. A. test.editorum.ru /en/manage/index