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UNITED NATIONS RECOMMENDATIONS ON THE TRANSPORT OF DANGEROUS GOODS
http://www.unece.org/trans/danger/publi/unrec/rev15/15files_e.html

U.S. DEPART MENT OF TRANSPORTATION HAZMAT SAFETY http://hazmat.dot.gov/

INTERNATIONAL CIVIL AVIATION ORGANIZATION (ICAO)
http://www.icao.int/

INTERNATIONAL AIR TRANSPORT ASSOCIATION (IATA) http://www.iata.org/index.htm

INTERNATIONAL MARITIME ORGANIZATION (IMO)
http://www.imo.org/home.asp