Silver, Gerald A. Data communications for business / Gerald A. Silver, Myrna L. Silver. - 3rd ed. - Danvers, Mass. : Boyd & Fraser Pub. Co., c1994. - xxii, 472 p. : ill. (some col.), col. maps ; 24 cm. Includes index. ISBN: 0877091420 LCCN: 93013400 Subjects--Topical Terms: Business--Data processing.Business--Communication systems.Computer networks--Planning.Office practice--Automation. LC Class. No.: HF5548.2 / .S3 1994 Dewey Class. No.: 650/.028/546