Get them now to ensure compliance and 1-day delivery immediately upon government release.
The Harmonized Tariff Schedule of the United States (HTSUS) - The essential government-issued import tariff manual for use in classifying imported merchandise for rates of duty, quota, restrictions, and special programs.
The Customs Regulations (19 CFR Ch 1., Pts. 0-199) - Government-issued reference contains all U.S. CBP Regulations for importers, brokers, and transportation-related companies. 
The Export Administration Regulations - A compilation of official regulations and policies governing the export licensing of commodities and technical data, including the Commerce Control List.
Schedule B - Statistical classification of commodities exported from the United States. For use by shippers in reporting export shipments from the U.S. All of these books are also available on searchable CD-ROM.
