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File:Farmers of forty centuries - Four Chinese incubators.jpg

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Summary

Description
English: Four Chinese incubators in a room where there are thirty, each having a capacity of 1,200 hens' eggs.
Date published 1911
Source F. H. King, Farmers of forty centuries, 1911, p. 178.
Author Unknown photographerUnknown photographer
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Public domain
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.
Public domain works must be out of copyright in both the United States and in the source country of the work in order to be hosted on the Commons. If the work is not a U.S. work, the file must have an additional copyright tag indicating the copyright status in the source country.
Note: This tag should not be used for sound recordings.PD-1923Public domain in the United States//commons.wikimedia.org/wiki/File:Farmers_of_forty_centuries_-_Four_Chinese_incubators.jpg

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current22:59, 7 October 2019Thumbnail for version as of 22:59, 7 October 20191,378 × 798 (277 KB)Library Guy{{Information |description ={{en|1=Four Chinese incubators in a room where there are thirty, each having a capacity of 1,200 hens' eggs.}} |date =published 1911 |source =F. H. King, ''Farmers of forty centuries'', 1911, p. 178. |author ={{Unknown|Photographer}} |permission ={{PD-1923}} }} 178 Category:Incubators (poultry)
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