> Mehrbändiges Werk
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[I]:
Denitrification by Anaerobic Filters and Ponds [I] [Bryan R. Sword]. Study conducted by Robert S. Kerr Water Research Center
Washington, DC: U. S. Government Printing Office, 19XX-
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II:
Denitrification by Anaerobic Filters and Ponds II Phase II / [James R. Jones] [Bryan R. Sword]. Study conducted by Robert S. Kerr Water Research Center
Washington, DC: U. S. Government Printing Office, 19XX-