computed for intervals of four minutes between the parallels of latitude 0⁰ and 30⁰ and parallels of declination 0⁰ and 24⁰ designed for the determination of the position-line at all hour angles without logarithmic computation,
Frederick Ball ...
|Main Author:||Ball, Frederick.|
London, J.D. Potter, 1918.
Changes in the ed. are the insertion of Tables II.C and II.D - cf. Pref. to 3d ed.
x (i.e. xiv), 245,  p.
diagrs. (incl. front.)
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