IJPP_Online_Appendix – Supplemental material for Dual Screening, Public Service Broadcasting, and Political Participation in Eight Western Democracies VaccariCristian ValerianiAugusto 2018 <p>Supplemental material, IJPP_Online_Appendix for Dual Screening, Public Service Broadcasting, and Political Participation in Eight Western Democracies by Cristian Vaccari and Augusto Valeriani in The International Journal of Press/Politics</p>