books.google.comhttp://books.google.com/books/about/A_set_of_linear_tables_for_correcting_th.html?id=S2kUAAAAQAAJ&q=altitude+57&utm_source=gb-gplus-shareA set of linear tables, for correcting the apparent distance of the moon from the sun or a fixed star, for the effect of refraction; to which are added, tables for parallax, and rules for computing the true distance

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## A set of linear tables, for correcting the apparent distance of the moon ...By John William Norie |