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Please read BHL's Acknowledgment of Harmful Content
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  1. By: California. Department of Water Resources. - Brown, Randall L.
    Publication info: Sacramento], For sale by the Supt. of Docs., U.S. Govt. Print. Off., Washington, 1971
    Holding Institution: University of California Libraries
    Subjects: Algae  Biological treatment  Nitrates  Nitrogen removal  Purification  Water  
  1. By: Dalsgaard, Tage - Thamdrup, Bo - Mark Jensen, Marlene
    Type: Article
    In: Gayana (Concepción)
    Date: 2006-10-01
    Subjects: anammox  Denitrification  Nitrogen removal  water column