00557naa#a2200181#i#450# EN\\bibl\66600 20251210092252.3 1998-8990 20141225b2014####ek#y0engy0150####ca RUS RU INDUSTRIAL CLUSTERS: THEORY AND EMPRICAL EVIDENCE Journal article Saint-Petersburg Saint-Petersburg University of State Fire Service of Emercom of Russia 2014 3 с. Journal article local Vorona-Slivinskaya L G Thomson A L journals.igps.ru