T his paper presents research results obtained in the to be very close to those f rom excavations. As a consequence the patinated specimens can be used as a 4th Framework Programme (1994-1998) of the substitute for genuine artefacts in the future to improve Standards, Measurements, and T esting Programme of conservation techniques. SE/S193 the European Union, DG XII: 'Improvement of means of measurements on archaeological copper alloys for Dr Beldjoudi is with Step S.A., 3 Place des Pianos, characterisation and conservation' (IMMACO) project. 93200 Saint-Denis, France, Ms Bardet and One of the aims of this project was to study copper Mr L acoudre are with EDF, Groupe des L aboratoires, alloy compositions of European objects dating f rom the L aboratoire Valectra, 2 rue Ampère, 93206 Saint-Bronze Age to Roman times. T his work has revealed Denis, Cedex 1, France, Dr Andrieu is at ENSAM, that five types of alloy seem to be particularly L M3,
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