The Classification handbook (2nd Edition) is intended to introduce the Harmonized Commodity Description and Coding System, commonly referred to as the Harmonized System.  It explains the origin of the Harmonized System, presents a detailed, precise arrangements for its management and describes additional publications attached to it.  It also contains the text of the International Convention on the Harmonized Commodity Description and Coding System, the Rules of Procedure of the Harmonized System Committee and Subcommittees and many other information. Visit the WCO Publication webpage to purchase on line.