D,. H.. · D. P. · D. Patrick · H. P.
| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Botswana, an economic survey and businessman's guide | 978-0-620-04528-5 (0-620-04528-0) | 1980 |
| Economic conditions in the Republic of Transkei | 978-0-620-03304-6 (0-620-03304-5) | 1978 |