| 词条 | Julien Dubuque's Mines |
| 释义 | > Mines of Spain State Recreation Area and E. B. Lyons Nature Center 8 : National Historic Landmarks in Iowa|Buildings and structures in Dubuque County, Iowa|Monuments and memorials in Iowa|National Register of Historic Places in Dubuque County, Iowa|Monuments and memorials on the National Register of Historic Places in Iowa|Historic American Buildings Survey in Iowa|Archaeological sites on the National Register of Historic Places in Iowa|Historic districts on the National Register of Historic Places in Iowa |
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