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Subject
- Surveys[remove]72
- Land grants4
- Mines and mineral resources4
- Aerial photogrammetry3
- Maps, Topographic3
- Photographic surveying3
- Public lands3
- Topographic maps3
- Coasts2
- Geodesy2
- Triangulation2
- Aerial photographs1
- Aerial photography1
- Base measuring1
- Cadastres1
- Discovery and exploration1
- Forbes Purchase, Fla., 1804-18351
- Geological surveys1
- Land use1
- Leveling1
