A directory is a list of names and addresses of persons, organizations, manufacturers; or periodicals. It may list information in a way which best serves the requirements of its users so as to enable them to get the required information readily. The word ‘directory’ may or may not appear in the title. The range of subjects dealt by directories is tremendous.“A book containing lists of names of residents, organizations or business houses in a town, a group of towns or a country, in alphabetical order, and/or in order of situation in reads, or of firms in trade classifications arranged in alphabetical order; or of professional people, manufacturers or business houses in a particular tread or profession”. Harrods Librarian Glossary and Reference Book.
Examples:
- World directory of mathematicians, 4th ed. Stockholm, Almqvist & Wiksell, 1970.
- World guide to technical information and documentation services, UNESCO, 1975.
- World of learning, 1947-, London, Europa, 1947-, Annual.