Columbia subject headings:
Grain trade--Minnesota--Minneapolis--Statistics--Periodicals.
Grain trade--United States--Statistics--Periodicals.
Harvard subject headings:
Grain trade--Minnesota--Minneapolis--Periodicals.
Grain trade--Minnesota--Minneapolis--Statistics--Periodicals.
Princeton subject headings:
Grain trade--Minnesota--Minneapolis--Statistics--Periodicals.
Grain trade--United States--Statistics--Periodicals.
Minneapolis Grain Exchange--Periodicals.
Periodicals.
Statistics.