File:Shallow Ground-level Trickle Filters.jpg

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Revision as of 11:39, 17 April 2008 by imported>Milton Beychok ({{Image notes |Description= Shallow depth, ground-level trickle filters in a publically owned wastewater treatment plant |Author= United States Environmental Protection Agency |Date= Don't know |Source= http://www.epa.gov/owm/primer.pdf |Country first published in= United States |Copyright holder= United States Environmental Protection Agency |Notes= |Other versions=}})
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Shallow_Ground-level_Trickle_Filters.jpg ‎(274 × 163 pixels, file size: 11 KB, MIME type: image/jpeg)

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