NIKOLAIEV, K. D.; ISAIENKO, V. M.; ZELENKO, Y. V. RESOURCE-SAVING PROCESS AND RESOURCE-SAVING TECHNOLOGIES IN THE FIELD OF ECOLOGICAL TOURISM. Science and Transport Progress , [S. l.], n. 28, p. 77–81, 2009. DOI: 10.15802/stp2009/13582. Disponível em: https://stp.ust.edu.ua/article/view/13582. Acesso em: 4 may. 2024.