21. Tariff classification study, report to the President and to chairmen of Committee on Ways and Means of House and Committee on Finance of Senate, pursuant to title 1?of Customs simplification act of 1954; Nov. 15, 1960; Explanatory and background materials, schedule 4, Chemicals and related products. Bookmark Corporate/Agency Authors: Tariff Commission Publisher: Tariff Commission Date: 1960 SuDoc number: TC 1.10:C 56/sch.4