Vol. 4 with individual title: Über einander berührende Kreise, translated from the Arabic and annotated by Y. Dold-Samplonius, H. Hermelink, and M. Schramm.
Vols. 1-3: Greek and Latin on opposite pages, with introductory matter in Latin; v. 4: German.
Editor statement varies slightly with v. 4.
Seven fold. leaves of facsims, inserted in pocket of v. 4.