The activities of the Dag Hammarskjold Library at United Nations (UN) Headquarters relating to the documentation of the UN are described. The topics discussed are: acquisition and maintenance of materials, indexing, reference, microreproduction, depository libraries, standardization, and coordination with agencies in the UN system. (Author)

Extra-library information services are helping libraries find solutions to the problems created by the changes in the information environment, the demand for current information, and the media by which the knowledge is distributed. There are three types of these services: (1) document handling systems, (2) data handling systems, and (3)…

After a summary of background knowledge useful in searching for information, the authors cover extensively the sources available to the researcher interested in locating educational data or conducting a search of bibliographic materials. They list reference books, dictionaries, almanacs, yearbooks, subject matter summaries; and sources for…