{"id":"000983459","type":"book","title":"Optical dating: progress at Oxford","publisher":"Oxbow Books","publisher-place":"Oxford","pages":"215-216","container-title":"Archaeological sciences. 1989. Proceedings of a Conference on the Application of Scientific Techniques to Archaeology, Bradford, september 1989","author":[{"family":"Aitken","given":"M. J."}],"issued":{"raw":"1991"}}