00480naa#a2200181#i#450# EN\\bibl\76160 20241110113646.7 2221-3260 20110225b2011####ek#y0engy0150####ca RUS RU WHAT IS THEORETICAL ECONOMICS AND WHY? Journal article Yaroslavl Yaroslavl State Technical University 2011 6 с. Journal article local . 330.101 RUS comincon.ru