NGC 657 (Polish Wikipedia)

Analysis of information sources in references of the Wikipedia article "NGC 657" in Polish language version.

refsWebsite

Global rank Polish rank

1web.archive.org

1^st place

1^st place

low place

2,148^th place

cseligman.com

Courtney Seligman: NGC 657. [w:] Celestial Atlas [on-line]. [dostęp 2014-01-07]. (ang.).

web.archive.org

Wilton Dias et al.: Catalog of Optically Visible Open Clusters and Candidates version 3.5. Departamento de Astronomia, 2016-01-28.