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NGC_973 Tham khảo|displayauthors=
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NGC_973 Tham khảoLiên quan
NGC 973 NGC 936 NGC 7331 NGC 970 NGC 97 NGC 2736 NGC 173 NGC 93 NGC 7318 NGC 273Tài liệu tham khảo
WikiPedia: NGC_973 http://www.atlasoftheuniverse.com/superc/perpsc.ht... //edwardbetts.com/find_link?q=NGC_973 http://ned.ipac.caltech.edu/cgi-bin/nph-objsearch?... http://cdsarc.u-strasbg.fr/ftp/J/A+AS/100/47/table... http://simbad.u-strasbg.fr/simbad/sim-id?Ident=NGC... //arxiv.org/abs/1710.01341 //arxiv.org/abs/astro-ph/0512244 //doi.org/10.1051%2F0004-6361%2F201220733 //doi.org/10.1051%2F0004-6361%2F201526667 //doi.org/10.1086%2F376604