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| AMS 8822 Horizontal (normal) ... 3 Jul 1998 |
| AMS north 8826 Rotate 180 ... 7 Jul 1998 |
| AMS north 8826 Rotate 180 ... 8 Jul 1998 |
| AMS 8854 Horizontal (normal) ... 23 Jul 1998 |
| Chavdar Tzochev ... Scale 1:1 Horizontal (normal) ... 11 Mar 2013 |
| James Herbst ... In End of Season Preliminary Report 2018, fig. 8. Horizontal (normal) ... 30 Jul 2018 |
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