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| Hephaisteion roof. Actual state plan. By W. B. Dinsmoor, Jr ... PD 1779 Horizontal (normal) ... 1968-1974 |
| Actual state plan of the roof of the Hephaisteion ... PD 1779 AMS Horizontal (normal) |
| Hephaisteion roof. Actual state plan. By W. B. Dinsmoor, Jr ... PD 1779 AMS Horizontal (normal) ... 1968-1974 |
| Actual state plan of the roof of the Hephaisteion ... W.B. Dinsmoor, Jr ... PD 1779 Horizontal (normal) ... 1968 |
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