Introduction to data communications systems
Subtitle: student text
By: IBM.
Edition: 1st ed.
Publisher: International Business Machines Corporation, Data Processing Division]
Published: 1974
Place of publication: [White Plains, N.Y
Language: eng
Number of pages: 139
Subjects: Computer networks.
Notes: "SR20-4461-0."
"This publication obsoletes Introduction to teleprocessing, form number SC 20-8095."