File:T3- d117 - Fig. 67. — photographie sur émail - Préparation de la couche sensible.png
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Summary
[edit]DescriptionT3- d117 - Fig. 67. — photographie sur émail - Préparation de la couche sensible.png |
Français : Préparation de la couche sensible de bichromate de potasse et de gomme, pour obtenir le cliché positif destiné à la photographie sur émail. |
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Date | |||||||||||||||||||||
Source | Figuier - Les Merveilles de la science, 1867 - 1891, Tome 3.djvu | ||||||||||||||||||||
Author |
creator QS:P170,Q2571091 |
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[edit]Public domainPublic domainfalsefalse |
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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 100 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. |
https://creativecommons.org/publicdomain/mark/1.0/PDMCreative Commons Public Domain Mark 1.0falsefalse
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