آونگ کاتر (Persian Wikipedia)

Analysis of information sources in references of the Wikipedia article "آونگ کاتر" in Persian language version.

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Kater, Henry (1818). "An account of experiments for determining the length of the pendulum vibrating seconds in the latitude of London". Phil. Trans. R. Soc. London. 104 (33): p.109. Retrieved 2008-11-25. {{cite journal}}: |pages= has extra text (help); Cite has empty unknown parameter: |coauthors= (help)