File:PSM V64 D562 Methods of air supply and ventilation.png

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Original file (1,683 × 1,118 pixels, file size: 122 KB, MIME type: image/png)

Summary

Description
English: Methods of air supply and ventilation
Date between 1903 and 1904
date QS:P,+1903-00-00T00:00:00Z/8,P1319,+1903-00-00T00:00:00Z/9,P1326,+1904-00-00T00:00:00Z/9
Source Popular Science Monthly Volume 64
Author Unknown authorUnknown author

Licensing

Public domain
Public domain
This media file is in the public domain in the United States. This applies to U.S. works where the copyright has expired, often because its first publication occurred prior to January 1, 1929, and if not then due to lack of notice or renewal. See this page for further explanation.

United States
United States
This image might not be in the public domain outside of the United States; this especially applies in the countries and areas that do not apply the rule of the shorter term for US works, such as Canada, Mainland China (not Hong Kong or Macao), Germany, Mexico, and Switzerland. The creator and year of publication are essential information and must be provided. See Wikipedia:Public domain and Wikipedia:Copyrights for more details.

File history

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Date/TimeThumbnailDimensionsUserComment
current05:33, 18 September 2011Thumbnail for version as of 05:33, 18 September 20111,683 × 1,118 (122 KB)Ineuw