00446nam a22001457a 4500020001800000082001500018100001600033245009500049260003200144300001000176650003900186650002400225650001400249650003700263  a9781788160742  aI5372 R143  aRid, Thomas  aActive measures: the secret history of disinformation and political warfarecby Thomas Rid  aLondonbProfile Booksc2020  a513p.  aDisinformation - Government policy  aInformation warfare  aDemocracy  aSocial media - Political aspects