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Downloadable electronic book. Also several shareware programs.
Sponsored Links:
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| URL: |
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| Title: |
A Short Guide to Celestial Navigation |
| Description: |
A short guide to celestial navigation |
| Category: |
Moon
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Earth
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Astronomy
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Planets
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Navigation
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Altitude
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Celestial
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Ephemerides
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Sextant
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Theodolite
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Almanac
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