Columbia subject headings:
Economic indicators--Mexico.
Marginality, Social--Mexico--Statistical methods.
Mexico--Social policy.
Regional disparities--Mexico--Statistical methods.
Social indicators--Mexico.
Harvard subject headings:
Basic needs--Mexico.
Income--Mexico.
Marginality, Social--Mexico--20th century--Longitudinal studies.
Princeton subject headings:
Marginality, Social--Mexico--Statistics--Longitudinal studies.
Mexico--Social conditions--1970---Statistics--Longitudinal studies.
Social indicators--Mexico--Longitudinal studies.