Nikolai Spassov

National Museum of Natural History, Bulgarian Academy of Sciences, 1 Tsar Osvoboditel Blvd, 1000 Sofia, Bulgaria
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National Museum of Natural History, Bulgarian Academy of Sciences, 1 Tsar Osvoboditel Blvd, 1000 Sofia, Bulgaria
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Plovdiv University “Paisiy Hilendarski”, Faculty of Biology, Department of Ecology and Environmental Conservation, 24 Tsar Asen Str., 4000 Plovdiv, Bulgaria
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National Museum of Natural History, Bulgarian Academy of Sciences, 1 Tsar Osvoboditel Blvd, 1000 Sofia, Bulgaria

Volume 53 1 April 2024

UPR 2147 CNRS, 44 rue de l’Amiral Mouchez, 75014 Paris, France
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National Museum of Natural History, 1 Tsar Osvoboditel Blvd, 1000 Sofia, Bulgaria
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Paleontological Museum Assenovgrad (Division of NMNH – Sofia), Assenovgrad, Bulgaria

Volume 35 1-2 June 2005

National Museum of Natural History, 1 Tsar Osvoboditel Blvd., 1000 Sofia, Bulgaria
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UPR 2147 CNRS, 44 rue de I'Amiral Mouchez, 75014 Paris, France
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Paleontological Branch of the National Museum of Natural History - Sofia, Assenovgrad, Bulgaria

Volume 34 3-4 December 2004

National Museum of Natural History, Academy of Sciences, 1000 Sofia, Bulgaria

Volume 27 3-4 December 1997

National Museum of Natural History, Bulgarian Academy of Sciences, 1000 Sofia, Bulgaria

Volume 27 1-2 August 1997