Declinazione (astronomia) (Italian Wikipedia)

Analysis of information sources in references of the Wikipedia article "Declinazione (astronomia)" in Italian language version.

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archive.org

Nautical Almanac Office U.S. Naval Observatory, Explanatory Supplement to the Astronomical Almanac, a cura di P. Kenneth Seidelmann, University Science Books, Mill Valley, CA, 1992, p. 724, ISBN 0-935702-68-7.
Peter Duffett-Smith, Practical Astronomy with Your Calculator, third edition, Cambridge University Press, 1988, pp. 28–29, ISBN 0-521-35699-7.

Forest Ray Moulton, An Introduction to Astronomy, New York, Macmillan Co., 1918, p. 125, art. 66.

Description of Epoch, su omniweb.gsfc.nasa.gov. URL consultato il 26 aprile 2018.