Columbia subject headings:
Agriculture--Economic aspects--Mexico.
Mexico--Economic conditions--1970-1982--Mathematical models.
Mexico--Economic conditions--1970-1982.
Harvard subject headings:
Agriculture--Economic aspects--Mexico
Mexico--Economic conditions--1982-1994--Mathematical models.
Mexico--Economic conditions--1982-1994.
Princeton subject headings:
Agriculture--Economic aspects--Mexico.
Mexico--Economic conditions--1970-1982--Mathematical models.
Mexico--Economic conditions--1970-1982.
Mexico--Economic conditions--1982-1994--Mathematical models.
Mexico--Economic conditions--1982-1994.