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Beobachtungen am Hummelnest
Published in Mitteilungen der Münchner Entomologischen Gesellschaft, in 1914, in volume 5, pages 96-105
Created: 2016-09-15, modified: 2016-09-15
Biologische Beobachtungen an Hummeln
Published in Mitteilungen der Münchner Entomologischen Gesellschaft, in 1915, in volume 6, pages 71-111
Created: 2016-09-15, modified: 2016-09-15