Columbia subject headings:
Free trade--Singapore.
Japan--Foreign economic relations--Singapore.
Singapore--Commercial policy.
Singapore--Foreign economic relations--Japan.
Singapore--Foreign economic relations--United States.
United States--Foreign economic relations--Singapore.
Harvard subject headings:
Free trade--Singapore.
Japan--Foreign economic relations--Singapore.
Singapore--Commercial policy.
Singapore--Foreign economic relations--Japan.
Singapore--Foreign economic relations--United States.
United States--Foreign economic relations--Singapore.
Princeton subject headings:
Free trade--Singapore.
Japan--Foreign economic relations--Singapore.
Singapore--Commercial policy.
Singapore--Foreign economic relations--Japan.
United States--Foreign economic relations--Singapore.