The Hindu-Arabic Numerals c10.5
The Hindu-Arabic Numerals c10.5
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c10.5
¹ Colebrooke, *Essays*, Vol. II, p. 504, on the authority of Ibn al-Adamī, astronomer, in a work published by his continuator Al-Qāsim in 920 A.D.; Al-Bīrūnī, *India*, Vol. II, p. 15.