00531naa#a2200169#i#450# EN\INFRA-M\bibl\15088 20240928143554.6 2500-0497 20161229b2016####ek#y0engy0150####ca RUS RU Math Education in the Pre-Revolutionary Provincial Gymnasium (on the Example of Yelets Boy´s Gymnasium) Journal article Moscow INFRA-M Academic Publishing LLC. 2016 0 с. Journal article local Bakhvalova T. zh-szf.ru