Region I Ilocos Norte, Abra, Ilocos Sur, Mountain Province, Benguet, La Union and Pangasinan.

Region I Ilocos Norte, Abra, Ilocos Sur, Mountain Province, Benguet, La Union and Pangasinan.

Bibliographic Details
Format: Book
Language:English
Published: Manila National Media Production Center 1977.
Subjects:
Luzon, Northern.