bn:00007855n
Noun Concept
Categories: Swimming pool equipment, Sand, Water filters
EN
bacteria bed
EN
Layer of sand or gravel used to expose sewage effluent to air and the action of microorganisms WordNet 3.0
Definitions
Relations
Sources
EN
Layer of sand or gravel used to expose sewage effluent to air and the action of microorganisms WordNet 3.0 & Open English WordNet
IS A
WordNet 3.0 & Open English WordNet
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