00523naa#a2200169#i#450# EN\INFRA-M\bibl\1876 20250130020518.4 1998-0728 20141017b2014####ek#y0engy0150####ca RUS RU Distinctive Features of Methods to Improve the Level of Proficiency of Primary School Pupils Journal article Moscow INFRA-M Academic Publishing LLC. 2014 3 с. Journal article local Motkova Yuliya Yur'evna zh-szf.ru