00642naa#a2200193#i#450# EN\INFRA-M\bibl\20614 /en/manage/index 20241212135752.4 2587-9111 20180425b2018####ek#y0engy0150####ca RUS RU Ecological Tourism in the Region (on the Example of the Pskov Region) Journal article Moscow INFRA-M Academic Publishing LLC. 2018 8 с. Journal article local Экономика. Экономические науки. 33 RUS Nikolaychuk Olga Alekseevna test.editorum.ru /en/manage/index