00634pamaa2200205 4500 0000013481 20050916090000.0 0877091420 004.6 SIL 1994 HF5548.2 SIL 1994 SILVER Data communications for business Gerald A. Silver and Myrna L. Silver. 3rd ed. Danvers: Boyd and Fraser, 1994. xxii, 472p.: 24cm. Computer networks -- Planning Business -- Data processing Business -- Communication systems Office practice -- Automation Silver, Myrna L.