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Williams-Thorpe, Olwen; Potts, P. J. and Jones, M. C.
(2004).
URL: http://antiquity.ac.uk/ant/078/Ant0780359.htm
Abstract
The authors present a new procedure for discovering where stone artefacts come from without having to cut a slice through them. The method is tested on axes of spotted dolerite bluestone from Preseli in Wales, source of monoliths at Stonehenge.