Dangos 1 - 3 canlyniadau o 3, amser ymholiad: 0.01e Mireinio'r Canlyniadau
  1. 1
    Sample survey methods and theory. 2v : Methods and applications /
    gan Hansen, Morris H. Etc
    Cyhoeddwyd 1953
  2. 2
    Sample survey methods and theory. 2v : Methods and applications /
    gan Hansen, Morris H. Etc
    Cyhoeddwyd 1953
  3. 3
    Sample survey methods and theory. 2v : Methods and applications /
    gan Hansen, Morris H. Etc
    Cyhoeddwyd 1953
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