NGC 6639 (French Wikipedia)

Analysis of information sources in references of the Wikipedia article "NGC 6639" in French language version.

refsWebsite
Global rank French rank
18th place
118th place
low place
3,002nd place
887th place
928th place
low place
low place
2,963rd place
6,854th place
2nd place
3rd place

astrovalleyfield.ca

caltech.edu

ned.ipac.caltech.edu

cseligman.com

doi.org

dx.doi.org

harvard.edu

simbad.harvard.edu

ui.adsabs.harvard.edu

adsabs.harvard.edu

muni.cz

webda.physics.muni.cz