skos:altLabel | - mortar
- mortars
- 12-inch mortar
- Abbot Quad
- 13-inch seacoast mortar M. 1861
- 12-inch mortars
- 12-inch coast defense mortar M1886, M1890, M1908, and M1912
- 12-inch (305 mm) mortars
- 12-inch M1890 mortars
- 12-inch M1890-M1 mortars
- 12-inch mortar M1886
- 12-inch mortar M1886, M1890
- 12\" Mortars
- 12\" mortar M1890
- 16-mortar battery
- M1890 mortars
- M1890MI 12-inch mortars
- M1918 Carriage
- Model 1890 breech-loading 12-inch mortars
- Mortar Battery
- breech-loading 12-inch mortars
- coast defense mortars
- rifled mortars
- seacoast mortars
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