Registros del 1 al 2 de 2 encontrados |
1.- Industrial mineral resources map of Britain 1:1.000.000 series Warrington, G., comp.; British Geological Survey, ed.; Highley,D.E, comp; Chapman, G.R., comp. Keyworth: BGS, 1996 1:1.000.000 series II/3-5-43 Ver registro
2.- United Kingdom minerals yearbook 1998: Statistical data to 1997 Highley,D.E, comp; Hillier, J.A.,comp; Chapman, G.R., comp.; British Geological Survey, ed. Keyworth: BGS, 1999 REVISTAS Ver registro
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