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Adelung-1793: Federn
Brockhaus-1911: Federn [2] · Federn
DamenConvLex-1834: Federn
Herder-1854: Federn
Lueger-1904: Federn [3] · Federn [4] · Federn [1] · Federn [2]
Meyers-1905: Federn [3] · Federn [2] · Federn [1]
Pierer-1857: Federn [2] · Federn [1]
Roell-1912: Federn