Search for: [References = "Burton J. \(1987\). Exchange pathways at a stone axe factory in Papua New Guinea. W\: G. de Sieveking, M.H. Newcomer \(red.\), The human uses of flint and chert. Proceedings of the fourth international flint symposium held at Brighton Polytechnic 10\-15 April 1983 \(183\-191\). Cambridge\: Cambridge University Press"]

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