Full reference OpenMind biblio ref
Al-Bīrūnī, Abū. 1967. The Determination of the Coordinates of Positions for the Correction of Distances Between Cities; A Translation from the Arabic of Kitāb Taḥdīd Nihāyāt Al-Amākin Li-Taṣḥīḥ Masāfāt Al-Masākin. Trans. Jamil Ali. Beirut: The American University of Beirut.
{ Jamil Ali, Abū Al-Bīrūnī, 1967 #392 }