"This publication brings together all schedules of commodity and geographic trade classifications currently being used in the compilation and publication of U.S. foreign trade statistics": Schedule A, (imports) including cross-classification to TSUSA, and ... individual Schedule A/B classification number assignments to the item descriptions shown in the selected commodity groupings and commodity tables of Report FT 990, Highlights U.S. Exports and Imports; Schedule B, (exports) classification ... use-end and SIC-based product classifications; Schedule C ... individual country designations included in summary reports involving geographic trade areas; and TSUSA (imports).