Science Stamp Thematic on WOPA+
Science
| 50 Years Manned Moon Landing |
| Issued: 02.05.2019 |
| ›Switzerland |
| Kaplan Turbine - Viktor Kaplan |
| Issued: 30.03.2019 |
| ›Austria |
| Redefinition of SI Base Units |
| Issued: 22.03.2019 |
| ›Slovenia |
| Joint issue Slovenia-Slovakia - Sundial, Astronomical Clock |
| Issued: 22.03.2019 |
| ›Slovenia |
| World Water Day |
| Issued: 22.03.2019 |
| ›Slovenia |
| Winning Belgium - Belgium in Space |
| Issued: 18.03.2019 |
| ›Belgium |
| Centenary of the Ciesm |
| Issued: 15.03.2019 |
| ›Monaco |
| Aurora Borealis - Northern Lights |
| Issued: 08.03.2019 |
| ›Aland Islands |
| Science Oriented Youth |
| Issued: 05.03.2019 |
| ›Israel |
| Émilie du Châtelet |
| Issued: 21.01.2019 |
| ›France |
| Engineering - Panama Canal |
| Issued: 17.01.2019 |
| ›Spain |
| 2019 International Year of the Periodic Table |
| Issued: 17.01.2019 |
| ›Spain |
| Israeli Achievements - Robotics |
| Issued: 04.12.2018 |
| ›Israel |
| Environmental Protection |
| Issued: 09.11.2018 |
| ›Slovenia |
| Minerals and Rocks |
| Issued: 24.10.2018 |
| ›Croatia |
| Preventing Breast Cancer |
| Issued: 18.09.2018 |
| ›Luxembourg |
| Climate Change |
| Issued: 12.09.2018 |
| ›Finland |
| UNESCO 2018 - We are the Biosphere |
| Issued: 10.09.2018 |
| ›France |
| Archeozoology in Eretz Israel |
| Issued: 28.08.2018 |
| ›Israel |
| Minerals from Romania |
| Issued: 29.06.2018 |
| ›Romania |
| (3 Office) - UNISPACE+50 |
| Issued: 20.06.2018 |
| ›United Nations |
| (New York) - UNISPACE+50 |
| Issued: 20.06.2018 |
| ›United Nations |
| (Geneva) - UNISPACE+50 |
| Issued: 20.06.2018 |
| ›United Nations |