Anh
calculation chart
abacus
Đức
Abakus
Rechenbrett
Arbeitsblatt
Bildtafel
Pháp
abaque
Abakus, Rechenbrett
abaque /SCIENCE/
[DE] Arbeitsblatt; Bildtafel
[EN] calculation chart
[FR] abaque
abaque /IT-TECH/
[DE] Abakus; Rechenbrett
[EN] abacus