H.G. · Harold A. Goodwin · Harold G. · Harold Leland Goodwin
| title | media type | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|---|
| Magic number | Hardcover | 978-0-13-545103-8 (0-13-545103-5) | 1969 |
| Responsible Tourism | " | 978-0-415-57002-2 (0-415-57002-6) | 2011 |
| Responsible Tourism | Paperback | 978-0-415-57003-9 (0-415-57003-4) | 2011 |