If you are interested in history of the World War I on the Balkan, I recommend you this book: Der Erste Weltkrieg auf dem Balkan: Perspektiven der Forschung (2011)
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It's me on the main square in Varna.
Do you have enough of your branch? Look at neighbour branches and combine yours with others. Consider where you live and look for local connections. I work on history, politics, culture and even remembrance in East Central Europe. So pictures and texts here shed light on events, researches and places related to these fields in the regional context.