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ספרים בחינם

International Conference Held at Washington for the Purpose of Fixing a Prime Meridian and a Universal Day. October, 1884. Protocols of the Proceedings

D.C.) International Meridian Conference (1884 : Washington · 2006

ספרייה ציבורית, Project Gutenberg. בלי הרשמה.

Time -- Systems and standards -- CongressesPrime Meridian -- Congresses