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Deutsch: Rekonstruktion eines römischen Abakus im RGZ-Museum Mainz (1977) Das Original ist aus Bronze und befindet sich in der Bibliothèque nationale de France (Paris)
English: Reconstruction of a Roman Abacus, made by the RGZ Museum in Mainz, 1977 The original is bronze and is held by the Bibliothèque nationale de France, in Paris.
Español: Reconstrucción de un ábaco romano, hecha por el RGZ Museum en Mainz, 1977 El original es de bronce y está en manos de la Biblioteca Nacional de Francia, en París.
Photographer:Mike Cowlishaw (aus der englischen Wikipedia)
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Photographer:Mike Cowlishaw (aus der englischen Wikipedia)
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