G. Howells · Gwyneth Parry Howells
| title | media type | ISBN-13 | year of publication |
|---|---|---|---|
| Acid Rain and Acid Waters | Paperback | 978-0-13-336751-5 | 1995 |
| Acid Rain and Acid Waters | Textbook Binding | 978-0-13-004797-7 | 1969 |
| Loch Fleet: Post-liming Catchment Responses | Broché | 978-2-88449-056-6 | 2004 |
| Water Quality for Freshwater Fish: Further Advisory Criteria | Hardcover | 978-2-88124-922-8 | 1994 |