The International Federation of Library Associations and Institutions (IFLA) is the leading international body representing the interests of library and information services and their users. It is the global voice of the information profession. The series IFLA Publications deals with many of the means through which libraries, information centres, and information professionals worldwide can formulate their goals, exert their influence as a group, protect their interests, and find solutions to global problems.

The International Federation of Library Associations and Institutions (IFLA) is the leading international body representing the interests of library and information services and their users. It is the global voice of the information profession. The series IFLA Publications deals with many of the means through which libraries, information centres, and information professionals worldwide can formulate their goals, exert their influence as a group, protect their interests, and find solutions to global problems.

Since publication of the previous (fourth) edition of this handbook by UNESCO in 1978, drastic technological progress and very important changes in the political-economic sphere have taken place, with great impact on library work. The international exchange of publications continues to be an important mode of collection building and is practiced by almost all major libraries. The 5th edition of the Handbook addresses these changes in all three parts: Practices (sources of documents, organization and methods), History and Current Examples (e.g. international book exchange: has it any future in the electronic age?) and the Directory (list of exchange centres, selected bibliography).