| Date of Award | 30 Jun 1989 |
|---|---|
| Original language | English |
| Supervisor | F.E.J. Kruseman Aretz (Supervisor 1) & F.W. Sijstermans (Supervisor 2) |
| Date of Award | 30 Jun 1989 |
|---|---|
| Original language | English |
| Supervisor | F.E.J. Kruseman Aretz (Supervisor 1) & F.W. Sijstermans (Supervisor 2) |