The United States in the world economy, the international transactions of the United States during the interwar period.

Mode of access: Internet.

Conversion equivalents in international trade; weights, measures, gauges, currencies, technical and special units in commerce and industry,

Mode of access: Internet.

Report of the Commission on the International Map of the World 1:1,000,000.

At head of title: International Geographical Union, VIIIth General Assembly, XVIIth International Geographical Congress, Washington, Aug. 8-15, 1952.