Surveying at the Lincoln Memorial : 無料・フリー素材/写真
Surveying at the Lincoln Memorial / NOAA's National Ocean Service
| ライセンス | クリエイティブ・コモンズ 表示 2.1 |
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| 説明 | A surveyor from NOAA's National Geodetic Survey measures the difference in elevation between two points. Learn more about what a geodesist does in our ocean fact. (Original photo source and more information: NOAA National Ocean Service Ocean Facts) |
| 撮影日 | 2014-03-19 10:04:14 |
| 撮影者 | NOAA's National Ocean Service |
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