Technology Stamp Thematic on WOPA+
Technology
| Wheel of Buna |
| Issued: 09.09.2004 |
| ›Bosnia and Herzegovina - Mostar |
| Information Technology |
| Issued: 26.01.2004 |
| ›Romania |
| Millennium - The 20th Century (I) |
| Issued: 13.07.2001 |
| ›Romania |