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Tourism and sustainable development in the historical sanctuary of Machupicchu-Perú

106-113 | | Open Access


Multimedia systems in the development of the academic offer of the Universities of Panama

104-119 | | Open Access


Management of cooperative organizations: an analysis from the theory of the agency.

56-69 | | Open Access


Ethical tourism, a necessary debate for sustainable development

49-70 | | Open Access


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