Message delivery system for the National Library and Infromation Service Network general requirements
| Awdur Corfforaethol: | |
|---|---|
| Fformat: | Llyfr |
| Iaith: | English |
| Cyhoeddwyd: |
Washington, D.C.
Library of Congress
1978.
|
| Cyfres: | Network planning paper
no.4 |
| Pynciau: |