00395nam a2200097Ia 4500008004100000245004100041245005900082260000900141650007700150856007000227171204s9999    xx            000 0 und d  aTeaching And Learning At A Distance:  cMichael Simonson, Sharon Smaldino, and Susan M. Zvacek  c2014  xPRF Ed 2: Educational Technology 1; Principles of Theories and Education  uhttp://down.ebook777.com/016/TeaAndLeaAtADisFouOfDisEdu6thEdi.pdf