Ilocos Sur - Buffe, Dorothy Jean Rowena; Cariaga, Ma. Christina; Manhilot, Jeffrey; Salazar, Cecille; Santiago, Arvin Gail.; Verdeflor, Kreste May Amor. (2000.)
Thesis (BS Tourism - - University of the Philippines, Diliman).
Keywords: Ecotourism -- Philippines -- Ilocos Sur; Rural development -- Philippines -- Ilocos Sur