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English: Rib structure of pyramidion with letter designations for courses
Date
Source Post-Earthquake Assessment (page 10), http://www.nps.gov/wamo/upload/Post-Earthquake-assessment12_22_logo.pdf
Author Wiss, Janney, Elstner Associates and Tipping Mar
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Public domain This image or media file contains material based on a work of a National Park Service employee, created as part of that person's official duties. As a work of the U.S. federal government, such work is in the public domain in the United States. See the NPS website and NPS copyright policy for more information.

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applies to jurisdiction: United States
determination method or standard: work of the federal government of the United States

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2013

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current18:25, 15 August 2016Thumbnail for version as of 18:25, 15 August 2016970 × 1,458 (672 KB)Joe Kress{{Information |Description ={{en|1=Rib structure of pyramidion with letter designations for courses}} |Source =Post-Earthquake Assessment (page 10), http://www.nps.gov/wamo/upload/Post-Earthquake-assessment12_22_logo.pdf |Author =Wis...

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source: https://en.wikipedia.org/wiki/File:Washington_Monument_pyramidion_rib_structure.png