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Download full textMyatt, DeWitt O.; Barclay, Donald A. – 1967
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)…
Descriptors: Abstracting, Computers, Documentation, Indexing
