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TY - `EDBOOK` TI - Proceedings of the 9th international conference on Computer supported collaborative learning - Volume 1 J2 - CSCL'09 PB - International Society of the Learning Sciences CY - [Erscheinungsort nicht ermittelbar] PY - 2009 SP - 664 p. T2 - ACM Digital Library T2 - DL Hosted proceedings SN - 978-1-4092-8598-4 DO - 10.5555/1600053 UR - https://dl.acm.org/action/showBook?doi=10.5555/1600053 AN - UBHD-69157377 ER -