MAKE A MEME View Large Image Trickling filter bed 2 w.JPG Beddgelert sewage treatment works Gwynedd Wales UK own taken by user Velela with a Pentax Optio555 digital camera 1/50sec f2 8 en Transferred from en wikipedia org http //en wikipedia org/wiki/File ...
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Keywords: Trickling filter bed 2 w.JPG Beddgelert sewage treatment works Gwynedd Wales UK own taken by user Velela with a Pentax Optio555 digital camera 1/50sec f2 8 en Transferred from en wikipedia org http //en wikipedia org/wiki/File Trickling_filter_bed_2_w JPG 2005-01-16 21 23 Velela 1296x972 680941 bytes 2005-01-11 Velela Velela en GFDL relicense Velela Wastewater treatment plants in Wales Beddgelert Trickle filter
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