Columbia subject headings:
Ethnology--Puerto Rico.
Puerto Rico--Social conditions.
Social sciences--Research--Puerto Rico.
Social structure--Puerto Rico.
Harvard subject headings:
Ethnology--Puerto Rico
Puerto Rico--Social conditions
Social sciences--Research--Puerto Rico.
Social structure--Puerto Rico.
Princeton subject headings:
Ethnology--Puerto Rico.
Puerto Rico--Social conditions.
Social sciences--Research--Puerto Rico.
Social structure--Puerto Rico.