File:Shallow Ground-level Trickle Filters.jpg: Difference between revisions

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imported>Caesar Schinas
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== Summary ==
== Summary ==
{{Image notes
Importing file
|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=}}
 
== Licensing/Copyright status ==
{{PD|usgov}}

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current19:54, 11 March 2022Thumbnail for version as of 19:54, 11 March 2022274 × 163 (11 KB)Maintenance script (talk | contribs)== Summary == Importing file

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