00554naa#a2200181#i#4500001001600000005001700016011001400033100004100047101000800088102000700096200011500103210005800218215001000276608002700286675002300313700001600336856002000352EN\\bibl\11275220260118200950.7##a2311-1402##a20170925b2017####ek#y0engy0150####ca0#aRUS##aRU1#aREVISITED THE EVOLUTIONARY AND PERSPECTIVE DEVELOPMENT OF EXTREME SPORTS IN THE TYUMEN REGIONeJournal article1#aNizhnevartovskcNizhnevartovsk State Universityd2017##a5 с.##aJournal article2local##a. 796(571.12)zRUS#1aIvanovgV A4#avestnik.nvsu.ru