00410nam a2200145Ia 4500003000400000008004100004020002700045040000800072100002400080245009100104250001200195260002900207300001500236365001300251LDD181029s9999    xx            000 0 und d  a9781461431848cE199.99  cLDD  aSpector, J. Michael 0aHandbook of research on educatiocnal communications and technologycJ. Michael Spector  a4th ed.  aNew YorkbSpringerc2014  axxxv, 1005  bE 199.99