Bortlova stupnica (Slovak Wikipedia)

Analysis of information sources in references of the Wikipedia article "Bortlova stupnica" in Slovak language version.

refsWebsite
Global rank Slovak rank
8,316th place
7,555th place

skyandtelescope.com

  • Sky & Telescope [online]. 2006-07-18, [cit. 2019-10-11]. Dostupné online. (po anglicky)