Pinpin, L. C. (1999). Indigenous environmental practices in Cordillera: An approach to environmental education.
Lua i Stíl Chicago (17ú heag.)Pinpin, Lilibeth C. Indigenous Environmental Practices in Cordillera: An Approach to Environmental Education. 1999.
Lua MLA (9ú heag.)Pinpin, Lilibeth C. Indigenous Environmental Practices in Cordillera: An Approach to Environmental Education. 1999.
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