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| Well at 32/ΜΕ, from northwest ... Scanned 2005 for the 75th anniversary exhibition and publication. 521 Horizontal (normal) ... July 1947 |
| ΠΠ-3 520, 521 Section ΠΠ 113 Section ΠΠ 117 Section ΠΠ 118 Section ΠΠ 114 |
| Notebook ... Arthur W. Parsons, Margaret Crosby ... 401 599 ... 1947 |
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