TY - BOOK AU - Hoppe, Heinrich Ulrich AU - 緒方, 広明 AU - Soller, A. (Amy) TI - The role of technology in CSCL : studies in technology enhanced collaborative learning PB - Springer PY - 2007 T2 - Computer-supported collaborative learning VL - v. 9 EP - x, 194 p. UR - http://ci.nii.ac.jp/ncid/BA84366643 SN - 9780387711355 SN - 9781441943842 ER -