H.H. · H. Hill · L -H · L. Hill
| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Adult Education for Health and Wellness: New Directions for Adult and Continuing Education, Number 130 | 978-1-118-08878-4 (1-118-08878-6) | 2011 |
| Environmental Adult Education #99 | 978-0-7879-7170-0 (0-7879-7170-7) | 2003 |