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NGC 1997 (Vietnamese Wikipedia)

Analysis of information sources in references of the Wikipedia article "NGC 1997" in Vietnamese language version.

refsWebsite
Global rank Vietnamese rank
1caltech.edu
887th place
588th place
1u-strasbg.fr
1,342nd place
1,205th place
1seds.org
5,388th place
4,069th place
1cseligman.com
low place
5,616th place

caltech.edu (Global: 887th place; Vietnamese: 588th place)

ned.ipac.caltech.edu

  • "NED results for object NGC 1997". NED. Truy cập ngày 11 tháng 11 năm 2017.

cseligman.com (Global: low place; Vietnamese: 5,616th place)

seds.org (Global: 5,388th place; Vietnamese: 4,069th place)

spider.seds.org

  • "NGC 1997". SEDS. Truy cập ngày 11 tháng 11 năm 2017.

u-strasbg.fr (Global: 1,342nd place; Vietnamese: 1,205th place)

simbad.u-strasbg.fr