for using input-output tables to make intercountry comparisons, including a type of graphic presentation, and to use these procedures to compare the economic structure of the United States with that of the Soviet Union, suggesting possible causes of differences. The United States table used is the 200-sector table for 1947.' Although this is earlier than other available tables, it is larger and thus more flexible to align with another table. The U.S.S.R. table used was derived by Vladimir Treml after extensive estimation of the portions missing in the published version.2