00420nam a2200145Ia 4500003000400000008004100004020002400045040000800069100001800077245008500095260002900180300001500209365001200224440003800236LDD181029s9999    xx            000 0 und d  a074943371xcP 19.99  cLDD  aCollis, Betty 0aFlexible learning in a digital worldbexperiences and expactationscBetty Collis  aLondonbKogan pagec2001  aviii, 231p  bP 19.99  aOpen and distance learning series