R. C. ยท R Christian
| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Backhoe Loader Handbook: Advanced Techniques for Operators | 978-0-924659-72-0 (0-924659-72-6) | 1995 |
| Excavator handbook: Advanced techniques for operators | 978-0-924659-26-3 (0-924659-26-2) | 1999 |