L.P. ยท Language Processors Inc.
| title | ISBN-13 | year of publication |
|---|---|---|
| CodeWatch: An interactive source-level debugger | 978-0-13-139916-7 | 1989 |
| Lpi-Cobol: Language Reference Manual | 978-0-13-139924-2 | 1990 |
| LPI-PASCAL language reference manual | 978-0-13-652959-0 | 1990 |
| Lpi-Pascal Language Reference Manual | 978-0-13-652967-5 | 1990 |
| LPI-PL/I Language Reference Manual | 978-0-13-683491-5 | 1990 |