Columbia subject headings:
Partido Socialista Chiapaneco--History.
Socialism--Mexico--Chiapas--History.
Harvard subject headings:
Partido Socialista Chiapaneco--History.
Socialism--Mexico--Chiapas--History.
Socialism--Mexico--Chiapas.
Princeton subject headings:
Chiapas (Mexico)--Politics and government.
Partido Socialista Chiapaneco--History.
Socialism--Mexico--Chiapas--History.
Socialist parties--Mexico--Chiapas--History.