Talk:Gum bichromate

 Velella  Velella Talk 14:11, 4 May 2023 (UTC)

External links modified
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I have just modified one external link on Gum bichromate. Please take a moment to review my edit. If you have any questions, or need the bot to ignore the links, or the page altogether, please visit this simple FaQ for additional information. I made the following changes:
 * Added archive https://web.archive.org/web/20051212054034/http://www.alternativephotography.com/process_gumbichromate.html to http://www.alternativephotography.com/process_gumbichromate.html

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Cheers.— InternetArchiveBot  (Report bug) 11:51, 25 October 2017 (UTC)

Alternative Links
Photographic facts and formulas
 * by Wall, E. J. (Edward John), 1860-1928
 * Publication date 1924
 * https://archive.org/details/photographicfact00wall — Preceding unsigned comment added by Dsmatthews (talk • contribs) 10:24, 16 December 2017 (UTC)