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Sun's true bearing or azimuth tables, computed for intervals of four minutes between the parallels of lattitude 30° and 60° inclusive

Sun's true bearing or azimuth tables, computed for intervals of four minutes between the parallels of latitude 30° and 60° inclusive

Tables of the Sun's true bearing or azimuth from sunrise to 10 H. A. M., and from 2 H. P. M. to sunset at intervals of four minutes, for the Parallels of 49° and 50° North: computed chiefly for the use of vessels entering or leaving the English Channel