NGC 6561 (Polish Wikipedia)

Analysis of information sources in references of the Wikipedia article "NGC 6561" in Polish language version.

refsWebsite
Global rank Polish rank
2,069th place
8,256th place
low place
2,148th place

cseligman.com

  • Courtney Seligman: NGC 6561. [w:] Celestial Atlas [on-line]. [dostęp 2015-02-20]. (ang.).

usp.br

astro.iag.usp.br