By Johnston Chris   Fell Peter   Cowley Malcolm   in Proceedings of the Water Environment Federation

ISSN:1938-6478|2005|4|571-582

Water Environment Federation‎(2005)‎

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By Johnston Chris   Cooper M A   Martin R J   in Insight - Non-Destructive Testing and Condition Monitoring

ISSN:1354-2575|46|10|606-610

The British Institute of Non-Destructive Testing‎(2004)‎

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