LIBROS DEL AUTOR: eugene j webb

2 resultados para LIBROS DEL AUTOR: eugene j webb

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  • Unobtrusive Measures
    Donald T. Campbell / Eugene J. Webb / Richard D. Schwartz
    Thirty-five years ago, the four authors of this book addressed the problems of validity in social science research. They were interested in new and unused methods for obtaining information. The original edition and an expanded version have often been cited as justification for using novel means to supplement, if not replace, conventional techniques, especially survey and archiv...
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    327,24 €

  • Unobtrusive Measures
    Donald T. Campbell / Eugene J. Webb / Richard D. Swartz
    ...
    Disponible

    228,46 €