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271
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272
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273
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274
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275
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276
Tourism's new thrust-sustainable socio economic development
Publicado en AmCham Philippines Business Journal (1999)Artigo -
277
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278
Give nature a chance-tourism on Boracay
Publicado en Journal on Environment, Energy and Minerals (1999)Artigo -
279
The socio-economic and environmental impacts of dolphin and whale watching in Bais City
Publicado 1998Thesis -
280