Columbia subject headings:
Death--Causes--Statistics.
Demography--Mexico--Baja California (State)--History.
Mortality--Mexico--Baja California (State)--Statistics.
Registers of births, etc.--Mexico--Baja California (State)
Harvard subject headings:
Baja California (Mexico : State)--Genealogy.
Baja California (Mexico : State)--Population--History--20th century.
Registers of births, etc.--Mexico--Baja California (State)
Princeton subject headings: