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Brockhaus-1837: Ibis
Brockhaus-1911: Medio tutissimus ibis · Ibis
DamenConvLex-1834: Ibis
Herder-1854: Ibis
Lemery-1721: Ibis
Meyers-1905: Medĭo tutissĭmus ibis
Pierer-1857: Ibis [2]
Vollmer-1874: Ibis