Non-Breakable Programs 2068 Back-Up Copies AuthorsJohn PetersenPublicationTimelinezPub DetailsTimeLinez v2 n8 Aug 1984Volume: 2 Issue: 8DateAugust 1984Pages7Read the articleSee all articles from TimeLinez v2 n8 Aug 1984 TagsTimelinez 1984 TS 2068 Type-in program PeopleJohn Petersen