Columbia subject headings:
Harvard subject headings:
California--Economic conditions
California--Emigration and immigration--History--20th century.
California--Emigration and immigration--Statistics.
Illegal immigration--California--History--20th century.
Illegal immigration--California--Statistics.
Noncitizens--California--History--20th century.
Noncitizens--California--Statistics.
Princeton subject headings:
California--Population--Economic aspects.
Emigration and immigration--Economic aspects--California.
Illegal aliens--California.
Immigrants--California.
United States. Immigration Reform and Control Act of 1986