00674naa#a2200193#i#450# EN\\bibl\127561 20260717212809.5 1994-4683 20231031b2023####ek#y0engy0150####ca RU PRINCIPLES OF CREATING INFORMAL EDUCATIONAL ENVIRONMENTS Journal article Moscow National State University of Physical Education, Sports and Health named after P.F. Lesgaft 2023 4 с. Journal article local Формирование и развитие личности. 37.032 Kupavtsev T S Zaytsev A A Sklyarenko I S uchzapiski.lesgaft.spb.ru