Kitāb ʿajāʾib al-aqālīm al-sabʿah ilá nihāyat al-ʿimārah : wa-kayfa hayʾat al-mudun wa-iḥāṭat al-biḥār bihā wa-tashaqquq anhārihā wa-maʿrifat jibālihā wa-jamīʿ mā warāʾa khaṭṭ al-istiwāʾ wa-alṭūl wa-al-ʿarḍ bi-al-misṭarah wa-al-ḥisāb wa-al-ʿadad wa-al-baḥth ʿalá jamīʿ mā dhukira - Suhrāb, 10th century (Harrassowitz, 1930)