File talk:Ligación de Staudiger.png

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This picture looks like one from here: http://www.piercenet.com/browse.cfm?fldID=4DEE3493-5056-8A76-4E33-8F3C0C374DE8 Is it free therefore? — Mfomich (talk) 14:17, 21 January 2013 (UTC)[reply]

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