| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Country Plumbing: Living with a Septic System | 978-0-911469-34-9 (0-911469-34-6) | 2009 |
| Country Plumbing: Living with a Septic System | 978-0-911469-02-8 (0-911469-02-8) | 1984 |
Gary Hardegree · Gary Hardwick · Gary Hartzell · Gary Hartzler · Gerry M Hartigan · Mr Gerry M Hartigan