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| Section of the Great Drain opposite the Eponymous Heroes, interior view ... AMS north 1910 Rotate 180 ... August 1967 |
| Hydraulic Unknown Limestone (Polygonal Masonry) Good, long stretches preserved ... Ca. 500 B.C. |
| Notebook ... T.L. Shear, Jr ... 1748 1947 ... 1967 |
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