Carla Steenberg · Carla Steinbach · Carol S.
| title | ISBN-13 | year of publica- tion | other author(s) |
|---|---|---|---|
| Composting Toilet System Book: A Practical Guide to Choosing, Planning and Maintaining Composting Toilet Systems | 978-0-9666783-0-7 | 2000 | David Del Porto |
| Liquid Gold: The Lore and Logic of Using Urine to Grow Plants | 978-0-9666783-1-4 | 2004 | |
| Liquid Gold: The Lore and Logic of Using Urine to Grow Plants | 978-1-903998-48-9 | 2004 | |
| The Composting Toilet System Book: A Practical Guide to Choosing, Planning and Maintaining Composting Toilet Systems | 978-0-9666783-3-8 | 2007 | David Del Porto |