BS 1438:2004(2009)
Aggregates — Single - sized aggregates for use as a medium in biological percolating filters
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BS 1438:2004(2009)
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BS 1438:2004(2009)
Release Date
1970
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BS 1438:2004(2009)
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BS 1438:2004(2009)
2004
BS 1438:2004
Aggregates - Single-sized aggregates for use as a medium in biological percolating filters
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