00638naa#a2200193#i#450# EN\\bibl\18143 20240504142510.6 1999-5644 20170915b2017####ek#y0engy0150####ca RUS RU Use of video materials in training Russian language Journal article CHERKIZOVO Russian State University of Tourism and Service 2017 6 с. Journal article local Туристско-экскурсионное обслуживание. 71.37 grnti Kositsyna Evgenia F. Chirich Irina V. V. rguts.editorum.ru