Columbia subject headings:
Harvard subject headings:
Agriculture--Economic aspects--Mexico--Linares (Nuevo León)
Linares (Nuevo León, Mexico)--Economic conditions.
Matorral--Mexico--Linares (Nuevo León)
Princeton subject headings:
Agriculture--Economic aspects--Mexico--Linares (Nueva León).
Linares (Nueva León, Mexico)--Economic conditions.
Matorral--Mexico--Linares (Nueva León).