| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Practical Mathematics: Consumer Applications | 978-0-03-051339-8 (0-03-051339-1) | 1997 |
| Practice Mathematics: Consumer Applications | 978-0-03-012769-4 (0-03-012769-6) | 1997 |
Frédéric Lienard · Friedrich Lehnerdt · Friedrich Lehnert · Friedrich Lenhardt · Friedrich Lienhard