John D. Spragins creator Joseph L. Hammond creator Krzysztof Pawlikowski creator text Addison-Wesley Pub. Co. 1991 1st ed. monographic xix, 716p; 4cm Telecommunications Telecommunications: Protocols and Design John D. Spragins ‎Joseph L. Hammond Krzysztof Pawlikowski 621.382 SPR-T 9780201092905