TY  - GEN
T1  - Region I
A1  - Abigan, Edmundo R.
LA  - English
PP  - S.l.
PB  - s.n.]
YR  - 1988
UL  - https://tuklas.up.edu.ph/Record/UP-99796217605994618
KW  - Ilocos region (Philippines) : Maps.
ER  -