Pautan luar Al-Hassar

  • Prof. Paul Kunitzsch, Al-Hassâr's Kitâb al-Bayân and the Transmission of the Hindu-Arabic Numerals retrieved 01-09-2010)
  • Manuscript of Kitâb al-bayân wa-l-tadhkâr, online by Library of the University of Pennsylvania, Philadelphia (retrieved 01-09-2010)


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