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There is a LibriVox audio version available here: http://librivox.org/the-scarlet-plague-by-jack-london/

Please note that this article's infobox is retrieving an ISBN from Wikidata currently. This is the result of a change made to {{ Infobox book}} as a result of this RfC. It would be appreciated if an editor took some time to review this ISBN to ensure it is appropriate for the infobox. If it is not, you could consider either correcting the ISBN on Wikidata (preferred) or introducing a blank ISBN parameter in the infobox to block the retrieval from Wikidata. If you do review the ISBN, please respond here so other editors don't duplicate your work. This is an automated message to address concerns that this change did not show up on watchlists. ~ Rob ^Talk 01:25, 15 May 2016 (UTC) reply