00575naa#a2200169#i#450# EN\\bibl\18747 20250124191729.5 2541-822X 20171228b2017####ek#y0engy0150####ca RUS RU COPYRIGHT PRINCIPLES OF CONSTRUCTION THE EDUCATIONAL SYSTEM OF THE GROUP Journal article Cheboksary Non-state educational private institution of additional professional education "Expert-methodological centre" 2017 5 с. Journal article local Tyurina Svetlana A. naukaru.ru