R.D. · R.R. · Recycling Research Division Staff
| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Book Recycling: A Correspondence Course | 978-0-318-01191-2 (0-318-01191-3) | 1984 |
| Recycling: Correspondence Course | 978-0-318-01188-2 (0-318-01188-3) | 1984 |
| Silver Recycling: A Correspondence Course | 978-0-318-01189-9 (0-318-01189-1) | 1984 |