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Brockhaus-1911: Exner [2]
Eisler-1912: Exner, S. · Exner, Sigmund · Exner, Franz
Herder-1854: Exner
Meyers-1905: Exner
Pagel-1901: Exner, Siegmund
Pataky-1898: Exner, Frl. Martha
Pierer-1857: Exner