File:PSM V64 D562 Methods of air supply and ventilation.png
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| Description |
English: Methods of air supply and ventilation |
| Date | between 1903 and 1904 |
| Source | Popular Science Monthly Volume 64 |
| Author | Unknown author |
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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.
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
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| current | 05:33, 18 September 2011 | | 1,683 × 1,118 (122 KB) | Ineuw (talk | contribs) |
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