Mario Bellini, electronic calculator Divisumma 18, 1973. For Olivetti, Italy. Photo Archivio Mario B
Mario Bellini, electronic calculator Divisumma 18, 1973. For Olivetti, Italy. Photo Archivio Mario Bellini, in “Olivetti una bella società”, ed. Allemandi 2008. Source storiaolivetti.it -- source link
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