Biographisches Lexikon des Kaiserthums Oesterreich (English, Biographical Encyclopedia of the Austrian Empire) (abbreviated Wurzbach from the author's surname) is a 60-volume work, edited and published by Constantin von Wurzbach, containing about 24,254 critical biographies of notable personages in every walk of life and from all parts of the Austro-Hungarian monarchy who were born, lived or worked there during the period 1750–1850.
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