Ball, John, D.Sc., F.R.G.S., 1872- *Cab.E.13.6 Ball’s Astrolabe diagram. Designed for facilitating the preparation of programmes of stars to be observed with the prismatic astro- labe, in all latitudes from 55° north to 55° south. Cairo. Government Press. 1919. (1), 3 pp. Double charts. Tables, 28.5 X 44 cm.
This card was printed at the Boston oe) Public Library, February 16, 1934. D4o16 — Astrolabe. — Tables. Astronomical.