DSIR · Government of New Zealand
| title | media type | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|---|
| Wetland plants in New Zealand | Spiral-bound | 978-0-478-09321-6 (0-478-09321-7) | 1998 |
| Wetland plants in New Zealand | Paperback | 978-0-477-02563-8 (0-477-02563-3) | 1989 |
P.J. · P Johnson · P.N. Johnson · Peter J. · Peter Johnson