Columbia subject headings:
Neighborhoods--Case studies.
Puerto Rico--Social conditions--Case studies.
San Juan (P.R.)--Social conditions.
Harvard subject headings:
Neighborhoods--Case studies.
Puerto Rico--Social conditions--Case studies.
San Juan (P.R.)--Social conditions.
Princeton subject headings:
Neighborhoods--Case studies.
Puerto Rico--Social conditions--Case studies.
San Juan (P.R.)--Social conditions.