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  1. Removal of nitrate by an algal system. [Author: Randall L. Brown.
    By: California. - Brown, Randall L.
    Publication info: Sacramento];For sale by the Supt. of Docs., U.S. Govt. Print. Off., Washington,1971.
    Contributed by: University of California Libraries (archive.org)
    Subjects: Algae  Biological treatment  Nitrates  Nitrogen removal  Purification  Water  
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