https://www.arithmeum.uni-bonn.de/sammlungen/rechnen-einst/objekt.html?tx_arithinventory%5Bobject%5D=7958&L=0
Precisa 176 Triomatic
precisa
https://www.arithmeum.uni-bonn.de/sammlungen/rechnen-einst/objekt.html?tx_arithinventory%5Bobject%5D=7958
Precisa 176 Triomatic
precisa