Ex-Meridian Altitude Tables. Declination (0˚-70˚).
Inbunden bok. George Philip & Sons, Ltd. 10 uppl. 1923. 92 sidor.
Gott skick. 16 x 25 cm. Blått, dek klbd. Namnt på pärmens insida. ”...to which is added an Explanation of Maximum and Minimum Altitude, Longitude as well as Latitude from two Observations of a Heavenly Body when near and on Opposite Sides of the Meridian. Also, a Solution of the New Navigation Method.”