00492naa#a2200157#i#450# EN\\bibl\23411 20240505153744.7 2500-3372 20180425b2018####ek#y0engy0150####ca RU REGIONS WITH HIGH CONCENTRATION OF SINGLE-INDUSTRY TOWNS: PROBLEMS OF DATA QUALITY IMPROVEMENT Journal article Kemerovo Kemerovo State University 2018 6 с. Journal article local Antonova I. S. jcenter.kemsu.ru