21. Tariff schedules of United States. annotated, for use in classification of imported merchandise for rate of duty and statistical purposes. Bookmark SuDoc number: TC 1.35/2:(date)
22. Tariff schedules of United States. annotated, for use in classification of imported merchandise for rate of duty and statistical purposes. Bookmark SuDoc number: TC 1.35/2:(date)
23. Tariff schedules of United States. annotated, for use on classification of import merchandise for rate of duty and statistical purposes. Bookmark SuDoc number: TC 1.35/2:(date)