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  1. 1
    Sample survey methods and theory. 2v : Methods and applications /
    by Hansen, Morris H. Etc
    Published 1953
  2. 2
    Sample survey methods and theory. 2v : Methods and applications /
    by Hansen, Morris H. Etc
    Published 1953
  3. 3
    Sample survey methods and theory. 2v : Methods and applications /
    by Hansen, Morris H. Etc
    Published 1953
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