United States Naval Observatory (Italian Wikipedia)

Analysis of information sources in references of the Wikipedia article "United States Naval Observatory" in Italian language version.

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  • (EN) Frances Leigh Williams, VIII. Scientific Opportunity at Last, in Matthew Fontaine Maury: Scientist of the Sea, New Brunswick, Rutgers University Press, 1963, p. 164.
    «These different names for the Observatory and the term 'Hydrographic Office' were used interchangeably until December, 1854, when the Secretary of the Navy officially ruled that the proper designation was 'The United States Naval Observatory and Hydrographical office.'»
  • (EN) Steven J. Dick, Sky and ocean joined: the U.S. Naval Observatory, 1830-2000, Cambridge University Press, 2003, pp. 547–8, 574, ISBN 0-521-81599-1.

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