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Uploaded by ripariaorg on Apr 8, 2008
A clip by Zika Reh from Subotica Wastewater Treatment Plant: Spirils and spirochaetae in activated sludge are indicators of high organic load and/or lack of oxygen -
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Thanks man :D
hellboyfull550 2 years ago
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Thanks man :D
hellboyfull550 2 years ago