No longer distributed to depository libraries in a physical form, <2003->
Some volumes distributed to depository libraries in microfiche.
Latest issue available via Internet at the Customs and Border Protection web site. Address as of 9/10/03: http://www.customs.gov/xp/cgov/toolbox/publications/trade/; current access is available via PURL.
Issued also in Spanish: Importar en los Estados Unidos.