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Subjects
- Calendar, Gregorian.[remove]1
- Compass.1
- Geometry--Early works to 1800.1
- Geometry--Problems, exercises, etc.1
- Mercator projection (Cartography)1
- Moon--Phases.[remove]1
- Navigation--Early works to 1800.1
- Navigation--Problems, exercises, etc.1
- Plane trigonometry.1
- Roots, Numerical--Problems, exercises, etc.1
- Sailing ships.[remove]1
- Sailing--Study and teaching.1
- Trigonometry--Early works to 1800.1
- Trigonometry--Problems, exercises, etc.1