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Gehrke behring. de Die Gewinnung des Diphterieserums aus Pferdeblut im Behringwerk zu Marburg National Library of Medicine um Fritz Gehrke Other versions Other fields Information field Remarks de unterer text links 'Beilage zu Hans Kraemer Der Mensch und die Erde' rechts unten 'Deutsches Verlagshaus Bong Co Berlin ' PDold Original