Columbia subject headings:
Harvard subject headings:
Cuba--Politics and government--1959-
Forced labor--Cuba.
Political persecution--Cuba.
Political prisoners--Cuba
Prisons--Cuba.
Unidades Militares de Ayuda a la Producción (Cuba)
Princeton subject headings:
Forced labor--Cuba.
Political persecution--Cuba.
Political prisoners--Cuba.
Prisons--Cuba.
Unidades Militares de Ayuda.