00339nas a2200133   4500000000100000000000100001000000100002008004100003100001700044700001600061245006700077856005400144490000700198       2008                            d1 aKim Holmberg1 aIsto Huvila00aLearning together apart: Distance education in a virtual world  uhttp://journals.uic.edu/fm/article/view/2178/20330 v13