9g - 10g - 11g
850au 860au 870au 880au 890au - 900au - 910au 920au 930au 940au 950au
896 897 898 899 900 - 901 - 902 903 904 905 906
- 18 Chwefror - Thabit ibn Qurra, seryddwr a mathemategydd Arabaidd
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