00314nam a2200109Ia 4500008004100000020001800041100002000059245006400079250001100143260003200154300001800186180205s9999    xx            000 0 und d  a9781138654457  aRodgers, Shelly  cEsther, ThorsonaDigital advertising :bTheory and research  a3rd ed  aNew york :bRoutledgec2017  axi, 465 pages