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NGC_752 Tham khảoLiên quan
Tài liệu tham khảo
WikiPedia: NGC_752 http://cseligman.com/text/atlas/ngc7a.htm#752 http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=... http://simbad.u-strasbg.fr/simbad/sim-id?Ident=2MA... http://simbad.u-strasbg.fr/simbad/sim-id?Ident=2MA... http://simbad.u-strasbg.fr/simbad/sim-id?Ident=2MA... http://simbad.u-strasbg.fr/simbad/sim-id?Ident=BD%... http://simbad.u-strasbg.fr/simbad/sim-id?Ident=BD%... http://simbad.u-strasbg.fr/simbad/sim-id?Ident=BD%... http://simbad.u-strasbg.fr/simbad/sim-id?Ident=BD%... http://simbad.u-strasbg.fr/simbad/sim-id?Ident=BD%...