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File:Calcarone method of Sulfur extraction.png

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Summary

Description
English: sulfur extraction in Sicily
Date
Source https://en.wikisource.org/wiki/Popular_Science_Monthly/Volume_26/February_1885/Sulphur_and_its_Extraction
Author WARNFORD LOCK

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Public domain

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.

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Calcarone method of Sulfur extraction

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4 February 1885Gregorian

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