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  1. 1

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

    Publicat a Philippine Daily Inquirer (1999)
    Article

    How reliable are telephone opinion polls
  2. 2

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

    Publicat 1993
    Llibre

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

    Survey research by telephone per Frey, James H.

    Publicat 1989
    Llibre

    Survey research by telephone
  4. 4

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

    Publicat 1987
    Llibre

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

    Survey research by telephone. per Frey, James H.

    Publicat 1983
    Llibre

    Survey research by telephone.
  6. 6

    Survey research by telephone per Frey, James H.

    Publicat 1983
    Llibre

    Survey research by telephone
  7. 7

    Survey research by telephone per Frey, James H.

    Publicat 1983
    Llibre

    Survey research by telephone
  8. 8

    Survey research by telephone per Frey, James H.

    Publicat 1983
    Llibre

    Survey research by telephone
  9. 9

    Survey research by telephone per Frey, James H.

    Publicat 1983
    Llibre

    Survey research by telephone
  10. 10

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

    Publicat 1979
    Llibre

    Surveys by telephone a national comparison with personal interviews

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