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Hermann von Helmholtz

Practical Physics published 1914

Macmillan and Company

Public domain	This media file is in the public domain in the United States. This applies to U.S. works where the copyright has expired, often because its first publication occurred prior to January 1, 1929, and if not then due to lack of notice or renewal. See this page for further explanation.	United States
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	Date/Time	Thumbnail	Dimensions	User	Comment
current	08:53, 29 March 2012		338 × 440 (42 KB)	Materialscientist (talk \| contribs)	better version from http://www.corbisimages.com/stock-photo/rights-managed/IH015189/hermann-ludwig-ferdinand-von-helmholtz
	20:00, 11 March 2005		255 × 332 (20 KB)	-xrydz- (talk \| contribs)	# {{PD-US}}

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