Fred Burggraf
Analogies for Trs-80 Model I or Iii, Lnw and Pmc With 16K and Cassette (Tape)- Analogies for Trs-80 Model I With 32K and Disk Drive
- Analogies for Trs-80 Model III With 32K and Disk Drive
- Analogies for ts 1000 and Zx81 With 16K and Cassette (Tape)
- Highway research at the national level
- The merits of limited access highways in urban areas
- Thinking Connections A1
- Thinking Connections B1
- U.S. Geography Master for Trs-80 Model III With 32K and Disk Drive (Disk)
- United States Geography Master for Trs-80 Models I and Iii, With 32K
- United States Geography Master for Trs-80 Models I and Iii, With 32K