Media type: E-Article Title: Activity Concepts and Expertise : Activity Concepts and Expertise Contributor: ADDIS, MARK imprint: Oxford University Press (OUP), 2017 Published in: Journal of Philosophy of Education Language: English DOI: 10.1111/1467-9752.12251 ISSN: 0309-8249 Keywords: Philosophy ; History ; Education Origination: Footnote: