Columbia subject headings:
Foreign trade regulation--Singapore--Periodicals.
Singapore--Commerce--Periodicals.
Singapore--Commercial policy--Periodicals.
Harvard subject headings:
Foreign trade regulation--Singapore--Periodicals.
Singapore--Commerce--Periodicals.
Singapore--Commercial policy--Periodicals.
Princeton subject headings:
Foreign trade regulation--Singapore--Periodicals.
Periodicals.
Singapore--Commerce--Periodicals.
Singapore--Commercial policy--Periodicals.