PakCat catalogue record Business data communications introductory concepts and techniques By Shelly, Gary B. Bibliographic details ISBN0877095078 PublisherBoyd & Fraser Pub. Co. Publication placeDanvers, Mass. Publication year1995 LanguageEnglish Material typeBook Physical descriptionxvi, 336 p. Additional authorsCashman, Thomas J. Hill, Judy A. SubjectsBusiness enterprises, Data transmission systems.