Rudolph Ackermann
[ar] رودولف أكرمان
[arz] رودولف اكرمان
[ca] Rudolph Ackermann
[cs] Rudolf Ackermann
[de] Rudolph Ackermann
[el] Ρούντολφ Άκερμαν
[es] Rudolph Ackermann
[fr] Rodolphe Ackermann
[it] Rudolph Ackermann
[mg] Rudolph Ackermann