Columbia subject headings:
Graffiti--Puerto Rico--San Juan--Pictorial works.
Street art--Puerto Rico--San Juan--Pictorial works.
Harvard subject headings:
Graffiti--Puerto Rico--San Juan.
Street art--Puerto Rico--San Juan.
Wall drawing (Conceptual art)--Puerto Rico.
Princeton subject headings:
Graffiti--Puerto Rico--San Juan.
Street art--Puerto Rico--San Juan.
Wall drawing (Conceptual art)--Puerto Rico.