Illustration: rm_images/Flintenbreite_constructed_wetland.jpg



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Last modified: Sept. 20, 2016, 8:13 a.m.

caption

Constructed wetland in an ecological settlement in Flintenbreite near Luebeck, Germany

source

By Nelsnelson - Own work, CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=15096605