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International journal of coal geology, 57 (2004) S. 23 - 48
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Siese, M.
2004
Verhandlungen der Deutschen Physikalischen Gesellschaft, 39 (2004) S. 186
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Yapar, S.
2004
Turkish journal of engineering & environmental sciences, 28 (2004) S. 41 - 49
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Walter, A.
2004
Journal of environmental monitoring, 6 (2004) S. 267 - 277
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