00487naa#a2200169#i#450# EN\\bibl\113080 20260118125654.7 2311-1402 20120325b2012####ek#y0engy0150####ca RUS RU Creation of Nizhnevartovsk region database Journal article Nizhnevartovsk Nizhnevartovsk State University 2012 4 с. Journal article local Sliva Ekaterina Alexandrovna vestnik.nvsu.ru