OER Knowledge CloudBook ChapterA harvest too large? A framework for educational abundanceA harvest too large? A framework for educational abundance2008Batson, TrentPaharia, NeeruKumar, M. S. V.open learningbarriers to adopting OERP2PUlearning communitiesCreative Commonscollaborative learningenMIT Press89–103978-0-262-03371-8does not applyhttps://mitpress.mit.edu/sites/default/files/titles/content/9780262515016_Open_Access_Edition.pdfhttps://mitpress.mit.edu/sites/default/files/titles/content/9780262515016_Open_Access_Edition.pdf0262033712chap6.pdf