| year of publication | ISBN | author(s) | title |
|---|---|---|---|
| 2006 | 978-0-9781604-0-1 | O G Popa | Logically Structured English Grammar |
| 2005 | 978-0-9781604-1-8 | O G Popa | Learn Hardware Firmware and Software Design |
| 978-0-9781604-4-9 | Learn Hardware Firmware and Software Design | ||