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Walter, A.
2004
Journal of environmental monitoring, 6 (2004) S. 267 - 277
...1464-0325...
OpenAccess 
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Journal of environmental monitoring, 3 (2001) S. 330 - 334
...1464-0325...
OpenAccess 
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Journal of environmental monitoring, 2 (2000) S. 351 - 354
...1464-0325...
OpenAccess