http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Foreign agricultural trade of the United States
Vols. for 1957-1961 issued by the Foreign Agricultural Service; 1962 by the Economic Research Service, Dept. of Agriculture.
Foreign agricultural trade of the United States. Commodity by country
Foreign agricultural trade of the United States. Annual supplement, trade by countries. Fiscal year