Character terminal protocols on PSS
Subtitle: a recommendation on the use of X3, X28 and X29
By: prepared by Study Group 3 of the British Telecom PSS User Forum.
Contributors: PSS User Forum. Study Group 3.
Edition: Revision 1.
Publisher: British Telecom PSS User Forum?]
Published: 1981
Place of publication: [S.l
Language: eng
Notes: SG3/CP(81)/6.

The green book.