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  1. 1

    How reliable are telephone opinion polls door Sicam, Edmund L.

    Gepubliceerd in Philippine Daily Inquirer (1999)
    Artikel

    How reliable are telephone opinion polls
  2. 2

    Telephone survey methods sampling, selection, and supervision door Lavrakas, Paul J.

    Gepubliceerd in 1993
    Boek

    Telephone survey methods sampling, selection, and supervision
  3. 3

    Survey research by telephone door Frey, James H.

    Gepubliceerd in 1989
    Boek

    Survey research by telephone
  4. 4

    Telephone survey methods sampling, selection, and supervision door Lavrakas, Paul J.

    Gepubliceerd in 1987
    Boek

    Telephone survey methods sampling, selection, and supervision
  5. 5

    Survey research by telephone. door Frey, James H.

    Gepubliceerd in 1983
    Boek

    Survey research by telephone.
  6. 6

    Survey research by telephone door Frey, James H.

    Gepubliceerd in 1983
    Boek

    Survey research by telephone
  7. 7

    Survey research by telephone door Frey, James H.

    Gepubliceerd in 1983
    Boek

    Survey research by telephone
  8. 8

    Survey research by telephone door Frey, James H.

    Gepubliceerd in 1983
    Boek

    Survey research by telephone
  9. 9

    Survey research by telephone door Frey, James H.

    Gepubliceerd in 1983
    Boek

    Survey research by telephone
  10. 10

    Surveys by telephone a national comparison with personal interviews door Groves, Robert M., Kahn, Robert L. 1918-

    Gepubliceerd in 1979
    Boek

    Surveys by telephone a national comparison with personal interviews

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