Macmillan · Venture Publishing, Inc.
| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Interpretation of Cultural and Natural Resources | 978-1-892132-39-0 (1-892132-39-7) | 2003 |
| Outdoor Recreation | 978-0-02-365360-5 (0-02-365360-4) | 1984 |
| Outdoor recreation | 978-0-02-365350-6 (0-02-365350-7) | 1980 |
D.K · D. Knudson · D. M. · Douglas K · M. K. · M Knudson