Columbia subject headings:
Agriculture--Economic aspects--China--Statistics--Periodicals.
China--Commerce--United States--Statistics--Periodicals.
Produce trade--China--Statistics--Periodicals.
Produce trade--United States--Statistics--Periodicals.
United States--Commerce--China--Statistics--Periodicals.
Harvard subject headings:
Agriculture--Economic aspects--China--Statistics--Periodicals.
China--Commerce--United States--Statistics--Periodicals.
Produce trade--China--Statistics--Periodicals.
Produce trade--United States--Statistics--Periodicals.
United States--Commerce--China--Statistics--Periodicals.
Princeton subject headings: