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              Couper, M. P., & Singer, E. (2012). Informed Consent for Web Paradata Use. Survey Re- search Methods, 7(1), 57-67. https://doi.org/10.18148/srm/2013.v7i1.5138
                 (xsd:string)
              
            
              Couper, M. P., & Singer, E. (2013). Informed Consent for Web Paradata Use. Survey Research Methods, 7(1), 57-67. doi:10.18148/srm/2013.v7i1.5138
                 (xsd:string)
              
            
              Couper, M. P., & Singer, E. (2013). Informed consent for web paradata sse. Survey Research Methods, 7, 57-67.
                 (xsd:string)
              
            
              Couper, M. P., & Singer, E. (2013). Informed consent for web paradata use. Survey Research Methods, 7, 57-67.
                 (xsd:string)
              
            
              Couper, M.P., & Singer, E. (2013). Informed consent for web paradata use. Survey Research Methods, 7(1), 57-67.
                 (xsd:string)
              
            
              Couper, Mick P. and Eleanor Singer. 2013. "Informed Consent for Web Paradata Use." Survey Research Methods 7:57-67. doi:10.18148/srm/2013.v7i1.5138
                 (xsd:string)
              
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