The 100th Anniversary of the Helgoland Bird Observatory 2010
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2010
The 100th Anniversary of the Helgoland Bird Observatory
8. april WM: Geen Ontwerp: Nicole Elsenbach, Franco Fienbork Graveren: Stampatore: Bundesdruckerei Perforatie: 14
![[The 100th Anniversary of the Helgoland Bird Observatory, type ]](https://www.stampworld.com/media/catalogue/Germany/Postage-stamps/2604-b.jpg)
