subway: References & Edit History
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Article History
| Type | Description | Contributor | Date |
|---|---|---|---|
| Modified link of Web site: National Center for Biotechnology Information - PubMed Central - Health and safety hazards associated with subways: A review. | Oct 10, 2026 | ||
| Add new Web site: National Center for Biotechnology Information - PubMed Central - Health and safety hazards associated with subways: A review. | Aug 27, 2026 | ||
| Add new Web site: World History Encyclopedia - Underground Railroad. | May 08, 2026 | ||
| Add new Web site: Frontiers - Frontiers in Public Health - Analysis on effectiveness of subway epidemic prevention measures considering subway passenger flow. | Jan 16, 2026 | ||
| Add new Web site: IOPscience - IOP Conference Series: Materials Science and Engineering - Research into the track/vehicle interaction processes for underground railways (PDF). | Nov 06, 2025 | ||
| Add new Web site: CNN Travel - 18 of the world?s best metro systems. | Feb 24, 2025 | ||
| Add new Web site: Official Siate of Subway. | May 12, 2023 | ||
| Article revised and updated. | Feb 02, 2023 | ||
| Rearranged media. | Aug 05, 2021 | ||
| Add new Web site: Official Site of Subway. | Aug 31, 2017 | ||
| Added video. | Mar 13, 2015 | ||
| Added early video of New York City subway system. | Jun 02, 2010 | ||
| Media added. | Feb 26, 2009 | ||
| Added new Web site: How Stuff Works - Science - How Subways Work. | Dec 28, 2008 | ||
| Article added to new online database. | May 27, 1999 |
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