Columbia subject headings:
Emigrant remittances--Philippines--Luzon.
Ilokanos (Philippine people)--Philippines--Luzon--Economic conditions.
Luzon (Philippines)--Economic conditions.
Luzon (Philippines)--Emigration and immigration.
Harvard subject headings:
Filipinos--Employment--Foreign countries
Illocos Norte (Philippines)--Economic conditions.
Ilocos Norte (Philippines)--Emigration and immigration.
Princeton subject headings: