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This is an update request for the document The Development of Web-based Learning Environments Model to Enhance Cognitive Skills and Critical Thinking for Undergraduate Students by null Petchtone, null Puangtong, null Chaijaroen and null Sumalee

Your paper was deposited in MUCC (Crossref) and appears online at https://doi.org/10.1016/j.sbspro.2012.08.001
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