File:PJvanKerckhoff.jpg

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DescriptionPJvanKerckhoff.jpg	English: Dutch chemist Petrus Johannes van Kerckhoff (1813-1876)
Date	1852
Source	Website Rijksuniversiteit Groningen
Author	Painting by Jan Ensing

Licensing

This work is in the public domain in its country of origin and other countries and areas where the copyright term is the author's life plus 70 years or fewer.

This work is in the public domain in the United States because it was published (or registered with the U.S. Copyright Office) before January 1, 1929.

This file has been identified as being free of known restrictions under copyright law, including all related and neighboring rights.

PDMCreative Commons Public Domain Mark 1.0falsefalse

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	Date/Time	Thumbnail	Dimensions	User	Comment
current	15:07, 2 January 2017		2,336 × 2,975 (2.19 MB)	Vysotsky (talk \| contribs)	higher res.
	22:28, 28 December 2016		350 × 446 (89 KB)	Vysotsky (talk \| contribs)	User created page with UploadWizard

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Usage on nl.wikipedia.org
- Lijst van rectores magnifici van de Rijksuniversiteit Groningen

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Image height	2,975 px
Lens used	60.0 mm f/2.8
Date metadata was last modified	21:29, 19 September 2007

File:PJvanKerckhoff.jpg

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1852