Primary Outlet: WHYY (Philadelphia PA)Broadcast Date: Monday, July 30, 2018 - 3:35pmBroadcast Type: interviewBroadcast Format: radioScholar: Blackman, JoshSubjects: the blocking of downloadable 3D firearm filesResearch Area: Law and Civil LibertiesLink: https://www.cato.org/multimedia/media-highlights-radio/josh-blackman-discusses-b…