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  1. Separation of mixed data sets into homogeneous sets /
    By: Crutcher, Harold L. - Joiner, Raymond L. - United States.
    Publication info: Asheville, N.C. :Dept. of Commerce, National Oceanic and Atmospheric Administration, Environmental Data Service, National Climatic Center ;1977.
    Contributed by: Penn State University (archive.org)
    Subjects: Classification of sciences  Cluster analysis  Factor analysis  Numerical taxonomy  
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  2. The use of factor analysis in modeling natural communities of plants and animals / Robert W. Poole.
    By: Poole, Robert W. - Illinois.
    Publication info: Urbana, Ill. :Illinois Natural History Survey Division,1971.
    Contributed by: University of Illinois Urbana Champaign
    Subjects: Biology  Factor analysis  Mathematical models  
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