00530naa#a2200169#i#450# EN\\bibl\113064 20260118200902.7 2311-1402 20120625b2012####ek#y0engy0150####ca RUS RU Research of communication skills of primary school age children with hearing impairments Journal article Nizhnevartovsk Nizhnevartovsk State University 2012 4 с. Journal article local Romaeva Marina Viktorovna vestnik.nvsu.ru