00610naa#a2200181#i#4500001001500000005001700015011001400032100004100046101000800087102000700095200008000102210007000182215001000252608002700262686008900289700002100378856002900399EN\\bibl\1728020240505074119.7##a1995-0411##a20170628b2017####ek#y0engy0150####ca0#aRUS##aRU1#aTHE PROBLEMS OF SUSTAINABLE DEVELOPMENT OF HISTORIC CITIESeJournal article1#aCHERKIZOVOcRussian State University of Tourism and Serviced2017##a6 с.##aJournal article2local##aТуристско-экскурсионное обслуживание. 71.372grnti#1aKHWAJAgAyham N.4#aspst-journal.editorum.ru