00531naa#a2200169#i#450# EN\\bibl\113064 20260316175225.1 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 nvsu.editorum.ru