File:Durability of Concrete from Pacific Locks Pedro Miguel Locks, Test Cores showing Rupture Planes (Back View) - DPLA - cbff7357a55ae2c9595ccc935f702bcd.jpg
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![File:Durability of Concrete from Pacific Locks Pedro Miguel Locks, Test Cores showing Rupture Planes (Back View) - DPLA - cbff7357a55ae2c9595ccc935f702bcd.jpg](https://upload.wikimedia.org/wikipedia/commons/thumb/6/67/Durability_of_Concrete_from_Pacific_Locks_Pedro_Miguel_Locks%2C_Test_Cores_showing_Rupture_Planes_%28Back_View%29_-_DPLA_-_cbff7357a55ae2c9595ccc935f702bcd.jpg/733px-Durability_of_Concrete_from_Pacific_Locks_Pedro_Miguel_Locks%2C_Test_Cores_showing_Rupture_Planes_%28Back_View%29_-_DPLA_-_cbff7357a55ae2c9595ccc935f702bcd.jpg?20201122170230)
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[edit]Durability of Concrete from Pacific Locks Pedro Miguel Locks, Test Cores showing Rupture Planes (Back View)
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Creator InfoField | Panama Canal Company. 7/1/1951-10/1/1979 | |||||||||||||||||||
Title |
Durability of Concrete from Pacific Locks Pedro Miguel Locks, Test Cores showing Rupture Planes (Back View) |
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Date | 1887-01-01/1940-12-31 | |||||||||||||||||||
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institution QS:P195,Q59661040 |
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current | 17:02, 22 November 2020 | ![]() | 1,496 × 1,224 (327 KB) | DPLA bot (talk | contribs) | Uploading DPLA ID cbff7357a55ae2c9595ccc935f702bcd |
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Durability of Concrete from Pacific Locks Pedro Miguel Locks, Test Cores showing Rupture Planes (Back View) (English)
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- US National Archives series: Photographs of the Construction of the Panama Canal, 1887 - 1940
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