Non-Breakable Programs 2068 Back-Up Copies Authors John Petersen Publication Timelinez Publication Details Volume: 2 Issue: 8 Date August 1984 Pages 7 Read the article See all articles from TimeLinez v2 n8 Aug 1984 Products Downloadable Media Related Articles Tags Timelinez, 1984, TS 2068, Type-in program People John Petersen