NGC 639 (Arabic Wikipedia)

Analysis of information sources in references of the Wikipedia article "NGC 639" in Arabic language version.

refsWebsite
Global rank Arabic rank
18th place
33rd place
43rd place
2nd place

harvard.edu

ui.adsabs.harvard.edu

  • Paturel G.; Dubois P.; Petit C.; Woelfel F. (2002), Comparison LEDA/SIMBAD octobre 2002. Catalogue to be published in 2003 (بالإنجليزية), Bibcode:2002LEDA.........0P, QID:Q66470150

wikidata.org

  • Paturel G.; Dubois P.; Petit C.; Woelfel F. (2002), Comparison LEDA/SIMBAD octobre 2002. Catalogue to be published in 2003 (بالإنجليزية), Bibcode:2002LEDA.........0P, QID:Q66470150