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  1. The action of ammonium chloride upon silicates / by Frank Wigglesworth Clarke and George Steiger.
    By: Clarke, Frank Wigglesworth, - Steiger, George,
    Publication info: Washington,Govt. Print. Off.,1902.
    Contributed by: Boston College Libraries (archive.org)
    Subjects: Analysis  Rocks  Silicates  
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  2. The extraction of potash from silicate rocks.
    By: Ross, William Horace,
    Publication info: [Washington,Govt. print. off.]1912.
    Contributed by: University of California Libraries (archive.org)
    Subjects: Potash  Silicates  
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