Columbia subject headings:
City planning--Periodicals.
Economic policy--Periodicals.
Regional planning--Periodicals.
Social policy--Periodicals.
Harvard subject headings:
City planning--Periodicals
City planning--Puerto Rico--Periodicals.
Economic policy--Periodicals
Puerto Rico--Economic policy--Periodicals.
Puerto Rico--Social policy--Periodicals.
Regional planning--Periodicals.
Regional planning--Puerto Rico--Periodicals.
Social policy--Periodicals
Princeton subject headings:
City planning--Periodicals.
Economic policy--Periodicals.
Periodicals.
Regional planning--Periodicals.
Social policy--Periodicals.