| Source: Kirkwood Historical Review (published by the Kirkwood Historical Society), 1962-2022 Location: St.L. / 05 / K636 | |
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| Corporate Name: | Unio (submarine) |
| Volume: | XL |
| Issue: | 1 |
| Date of Publication: | March 2001 |
| Page: | 3-7 |
| Remarks: | in article titled "Professor Nipher and His Submarine" (continued in June 2001 and September 2001 issues) |
