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	2.	Visible learning [electronic resource] : a synthesis of over 800 meta-analyses relating to achievement / John A.C. Hattie. by Hattie, John [author.]. Publisher: London : Routledge, 2009Online access: View this item online Availability: Items available for reference: Digital Library [Call number: 370.152 EBOOK] (1). Location(s): Digital Library Browns ebook 370.152 EBOOK.