![Belgium 1861 - Leopold I: 'Elongated Medallion' - without watermark: 20c Blue - OBP/COB 11 - met keurstempeltje G.Blumenthal - Catawiki Belgium 1861 - Leopold I: 'Elongated Medallion' - without watermark: 20c Blue - OBP/COB 11 - met keurstempeltje G.Blumenthal - Catawiki](https://assets.catawiki.nl/assets/2023/10/9/6/4/a/64af0973-24c0-468a-9abc-374c46238f0d.jpg)
Belgium 1861 - Leopold I: 'Elongated Medallion' - without watermark: 20c Blue - OBP/COB 11 - met keurstempeltje G.Blumenthal - Catawiki
![1.quater. Very low work intensity rate by educational status, Belgium... | Download Scientific Diagram 1.quater. Very low work intensity rate by educational status, Belgium... | Download Scientific Diagram](https://www.researchgate.net/publication/338332052/figure/fig3/AS:842662663950343@1577917843946/quater-Very-low-work-intensity-rate-by-educational-status-Belgium-in.png)
1.quater. Very low work intensity rate by educational status, Belgium... | Download Scientific Diagram
![Did Large-Scale Vaccination Drive Changes in the Circulating Rotavirus Population in Belgium? | Scientific Reports Did Large-Scale Vaccination Drive Changes in the Circulating Rotavirus Population in Belgium? | Scientific Reports](https://media.springernature.com/full/springer-static/image/art%3A10.1038%2Fsrep18585/MediaObjects/41598_2015_Article_BFsrep18585_Fig1_HTML.jpg)
Did Large-Scale Vaccination Drive Changes in the Circulating Rotavirus Population in Belgium? | Scientific Reports
![Frontiers | Hypoxia Promotes a Mixed Inflammatory-Fibrotic Macrophages Phenotype in Active Sarcoidosis Frontiers | Hypoxia Promotes a Mixed Inflammatory-Fibrotic Macrophages Phenotype in Active Sarcoidosis](https://www.frontiersin.org/files/Articles/719009/fimmu-12-719009-HTML-r1/image_m/fimmu-12-719009-g001.jpg)