{"id":"000830795","type":"book","title":"Palaeolithic chert exploitation in the limestone stretch of the Egyptian Nile Valley","publisher":"Springer Science + Business Media","publisher-place":"New York, NY","container-title":"The African archaeological review, 8.1990: S. 77-102, Ill","author":[{"family":"Vermeersch","given":"P. M."}],"issued":{"raw":"1990"}}