Columbia subject headings:
Economic sanctions, American--Soviet Union--Econometric models.
Embargo--Economic aspects--United States--Econometric models.
Grain trade--Soviet Union--Econometric models.
Grain trade--United States--Econometric models.
Harvard subject headings:
Princeton subject headings:
Economic sanctions, American--Soviet Union--Econometric models.
Embargo--Economic aspects--United States--Econometric models.
Grain trade--Soviet Union--Econometric models.
Grain trade--United States--Econometric models.