{"id":"001335887","type":"article","title":"The stratigraphical and cultural problems of the passage from Middle to Upper Palaeolithic in Palestinian caves","publisher":"UNESCO","publisher-place":"Paris","pages":"221-225","container-title":"The origin of Homo sapiens. Proceedings of the Paris Symposium, 2-5 september 1969","author":[{"family":"Bar-Yosef","given":"Ofer"}],"issued":{"raw":"1972"}}