Tables for Azimuths, Great-Circle Sailing, And Reduction to the Meridian : With a New And Improved "sumner" Method- Latitudes 90⁰ N. to 90⁰ S., Declinations 90⁰ N. to 90⁰ S.

Cover Tables for Azimuths, Great-Circle Sailing, And Reduction to the Meridian : With a New And Improved "sumner" Method- Latitudes 90⁰ N. to 90⁰ S., Declinations 90⁰ N. to 90⁰ S.
Tables for Azimuths, Great-Circle Sailing, And Reduction to the Meridian : With a New And Improved "sumner" Method- Latitudes 90⁰ N. to 90⁰ S., Declinations 90⁰ N. to 90⁰ S.
Blackburne, H. S
"Also other useful navigational tables, with numerous examples of double altitudes, equal altitudes, azimuths, etc." "Published by direction of the Hon. the Minister of Marine."

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