Balisong, B. V. (1974). The history and present status of education in the province of Abra. University of the Philippines Library.
Chicago-referens (17:e uppl.)Balisong, Benito V. The History and Present Status of Education in the Province of Abra. Quezon City: University of the Philippines Library, 1974.
MLA-referens (9:e uppl.)Balisong, Benito V. The History and Present Status of Education in the Province of Abra. University of the Philippines Library, 1974.
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