Columbia subject headings:
African Americans--Puerto Rico--Social conditions.
Blanco, Tomás, 1896-1975. Prejuicio racial en Puerto Rico.
Puerto Rico--Race relations.
Racism--Puerto Rico--History--20th century.
Harvard subject headings:
Black people--Puerto Rico--Social conditions.
Blanco, Tomás, 1896-1975. El prejuicio racial en Puerto Rico.
Puerto Rico--Race relations.
Racism--Puerto Rico--History--20th century.
Princeton subject headings:
Black people--Puerto Rico.
Puerto Rico--Race relations.