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NGC 3991 (Polish Wikipedia)

Analysis of information sources in references of the Wikipedia article "NGC 3991" in Polish language version.

refsWebsite
Global rank Polish rank
1u-strasbg.fr
1,342nd place
566th place
1cseligman.com
low place
2,148th place
1nrao.edu
low place
low place

cseligman.com

  • Courtney Seligman: NGC 3991. Celestial Atlas. [dostęp 2015-06-12]. (ang.).

nrao.edu

  • ARP 313. [w:] An HI Rogues Gallery [on-line]. National Radio Astronomy Observatory, 2001. [dostęp 2015-06-12]. (ang.).

u-strasbg.fr

simbad.u-strasbg.fr