வானியல் (Tamil Wikipedia)

Analysis of information sources in references of the Wikipedia article "வானியல்" in Tamil language version.

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archive.org

DeWitt, Richard (2010). "The Ptolemaic System". Worldviews: An Introduction to the History and Philosophy of Science. Chichester, England: Wiley. p. 113. ISBN 1-4051-9563-0.

archive.today

Staff (11 September 2003). "Why infrared astronomy is a hot topic". ESA இம் மூலத்தில் இருந்து 30 ஜூலை 2012 அன்று. பரணிடப்பட்டது.. https://archive.today/20120730/http://www.esa.int/esaCP/SEMX9PZO4HD_FeatureWeek_0.html. பார்த்த நாள்: 11 August 2008.

books.google.com

Cox, A. N., ed. (2000). Allen's Astrophysical Quantities. New York: Springer-Verlag. p. 124. ISBN 0-387-98746-0.

doi.org

dx.doi.org

Aaboe, A. (1974). "Scientific Astronomy in Antiquity". Philosophical Transactions of the Royal Society 276 (1257): 21–42. doi:10.1098/rsta.1974.0007. Bibcode: 1974RSPTA.276...21A.

esa.int

Staff (11 September 2003). "Why infrared astronomy is a hot topic". ESA இம் மூலத்தில் இருந்து 30 ஜூலை 2012 அன்று. பரணிடப்பட்டது.. https://archive.today/20120730/http://www.esa.int/esaCP/SEMX9PZO4HD_FeatureWeek_0.html. பார்த்த நாள்: 11 August 2008.

harvard.edu

adsabs.harvard.edu

Aaboe, A. (1974). "Scientific Astronomy in Antiquity". Philosophical Transactions of the Royal Society 276 (1257): 21–42. doi:10.1098/rsta.1974.0007. Bibcode: 1974RSPTA.276...21A.

nasa.gov

sunearth.gsfc.nasa.gov

"Eclipses and the Saros". NASA. Archived from the original on 30 அக்டோபர் 2007. Retrieved 28 October 2007.

web.archive.org

"Eclipses and the Saros". NASA. Archived from the original on 30 அக்டோபர் 2007. Retrieved 28 October 2007.