Columbia subject headings:
California--Emigration and immigration--Economic aspects.
Immigrant business enterprises--California.
Mexicans--California--Economic conditions.
Mexicans--Québec (Province)--Montréal Metropolitan Area--Economic conditions.
Mexico--Emigration and immigration--Economic aspects.
Montréal (Québec)--Emigration and immigration--Economic aspects.
Harvard subject headings:
Communities--North America.
International business enterprises--North America.
International economic relations
Princeton subject headings: