sources:
- Preliminary reports of the Syria-Japan archaeological joint research in the region of Ar-Raqqa, Syria, 2007, Al-Rafidan XXIX 2008, pp. 117- 190 - http://homepage.kokushikan.ac.jp/kaonuma/nomad/PDF/29-06%20Ohnuma.pdf
sources:
Shaft tombs of the Early Bronze Age, Wadi Jazla East
Flit tools workshop
Pre-Islamic Burial Cairns in the Northern Flank of Jabal Bishri