Pokrovsky NE Chernyaeva TI Tourism social theory to management practice Teaching aid 2 nd ed Additional ispr i Presents broad panorama ideas concepts approaches to reveal essential characteristics modern tourism First Pokrovskiy N E Chernyaeva T I Turizm ot sotsialnoy teorii k praktike upravleniya ucheb posobie 2 e izd ispr i dop Predstavlena shirokaya panorama idey kontseptsiy podkhodov pozvolyayushchikh raskryt sushchnostnye kharakteristiki sovremennogo