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| Part | Date | Title | Status |
|---|---|---|---|
| 1968-12-31 | USA Standards Institute 1969 Catalog | Online | |
| X3.124-1985 | 1985-06-24 | Graphical Kernel System (GKS) Functional Description | Online |
| X3.4-1986 | 1985-04-26 | Coded Character Sets - 7-Bit American National Standard Code for Information Interchange (7-Bit ASCII) | Online |
