Data communications; market information sources.
By: [Prepared by Randal K. Young.
Contributors: Young, Randal K.
Publisher: For sale by the Supt. of Docs., U.S. Govt. Print Off.
Published: 1972
Place of publication: Washington]
Language: eng
Number of pages: 53
Subjects: Data transmission equipment industry -- United States -- Directories.
Notes: "Reference number BDC 720-09-72-022."