Columbia subject headings:
Harvard subject headings:
Latin America--History--Periodicals.
Mexico--History--Periodicals.
Michoacán de Ocampo (Mexico)--History--Periodicals.
Princeton subject headings:
Periodicals.
Research--Mexico--Michoacán de Ocampo--Periodicals.
Science--Mexico--Michoacán de Ocampo--Periodicals.
Technology--Mexico--Michoacán de Ocampo--Periodicals.