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1.- 30th International Geological Congress. Beijing, China, 4-14 August 1996 Congreso - International Geological Congress (30. 1996 .Pekín) [S.l.: s.n., 1996?] I/10-5-1/4 Ver registro
2.- Documents of the 30th International Geological Congress Congreso - International Geological Congress (30. 1996 .Pekín) Beijing: Geological Publishing House, 1996 I/13-1-4 Ver registro
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