This book begins by explaining the background to the HICP project, both from an economic and a political viewpoint, and describes the specific needs for harmonized price indices resulting from the Maastricht treaty of 1992. It analyses the process of establishing the necessary procedures for taking this urgent work forward and gives details of the technical issues involved, and the critical issue of drafting legal acts which would be necessary to ensure full compliance with the new rules. It includes analysis of products, price collection issues, quality adjustment, timing, and a host of other issues, and discusses the arguments which had to be resolved, as well as some human aspects of the process too. It also looks at the funding aspects, the recruitment of specialist consultants, the legal processes and the organization of meetings, both in Luxembourg and in other countries.