WITNESS

Al-Kitāb al-muḥīṭ fī al-ḥisāb_St. Petersburg_Institute of Oriental Studies (St. Petersburg)_Arabic Manuscripts_B 2139

References

Khalidova, A. 1986. Arabskiye Rukopisi Instituta Vostokovedeniya Akademii Nauk SSSR. 2 vol. Moskva.

Vol. 1, p. 452.