00393nam a2200133Ia 4500003000400000008004100004020002700045040000800072100002400080245009800104260003000202300001500232365001200247LDD181029s9999    xx            000 0 und d  a9780415963893cP 22.99  cLDD  aBramble, William J. 0aEconomics of Distance and Online LearningbTheory, Practice, and ResearchcWilliam J. Bramble  aNew YorkbRoutledgec2008  axii, 296p.  bP 22.99