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Johannes Praetorius
[arz] جون براتوريوس
[cs] Johann Richter
[de] Johann Richter (Astronom)
[es] Johannes Praetorius
[fr] Johann Richter
[ht] Johannes Praetorius
[it] Johann Richter (astronomo)
[lb] Johann Richter (Astronom)
[pt] Johannes Praetorius (matemático)
[ru] Преториус, Иоганн