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The quality of this chemical structure is disputed. The dispute is about: Low resolution, excessive whitespace (Please discuss the issue on this file's talkpage) See also Wikipedia:Manual of Style/Chemistry/Structure drawing Usage: {{low quality chem|reason}} If there is a better version of the image available, please link it (e.g. using {{Superseded}} or {{Vector version available}}). Deutsch ∙ English ∙ +/−

DescriptionStrukt vzorec D2O.PNG	Čeština: Strukturní­ vzorec těžké vody
Date	8 October 2006 (original upload date)
Source	http://chem.sis.nlm.nih.gov/chemidplus Modified by Antoní­n Ví­tek, email: avitek(at)lib(dot)cas(dot)cz Transferred from cs.wikipedia; transfered to Commons by User:Sevela.p using CommonsHelper.
Author	National Library of Medicine, Bethesda, MD, USA Original uploader was Avitek at cs.wikipedia
Permission (Reusing this file)	Public domainPublic domainfalsefalse This image is a work of the National Institutes of Health, part of the United States Department of Health and Human Services, taken or made as part of an employee's official duties. As a work of the U.S. federal government, the image is in the public domain. Please ensure that this image was actually created by the US Federal government. The NIH frequently uses commercial images which are not public domain. This file has been identified as being free of known restrictions under copyright law, including all related and neighboring rights. https://creativecommons.org/publicdomain/mark/1.0/PDMCreative Commons Public Domain Mark 1.0falsefalse
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Original upload log edit

• 2006-10-08 15:46 Avitek 200×200×8 (1700 bytes) Strukturní vzorec '''Zdroj:''' http://chem.sis.nlm.nih.gov/chemidplus/ <br /> '''Autor:''' National Library of Medicine, Bethesda, MD, USA <br/> '''Licence:''' Government information at NLM Web sites is in the public domain: http://www.nlm.nih.gov/copy