Columbia subject headings:
Capitalism.
Communism.
Cooperation.
Economic history.
Mutualism--Colombia.
Mutualism.
Socialism.
Harvard subject headings:
Capitalism
Communism
Cooperation
Economic history
Mutualism--Colombia.
Mutualism.
Socialism
Princeton subject headings:
Capitalism.
Communism.
Cooperation.
Economic history.
Mutualism--Colombia.
Mutualism.
Socialism.