00507nam a2200169 4500 vtls000078663 MTX 160715s2007 enk 001 0 eng d 201607151119 staff 201605041218 admin Ebook Elizabeth C. Thach 114261 Effective distance learning: training techology [electronic resource] 2001 http://portal.igpublish.com/iglibrary/search/ASTDB0000211.html 10 75227 75227