Thực đơn
NGC_204 Tham khảoThực đơn
NGC_204 Tham khảoLiên quan
NGC 204 NGC 2040 NGC 206 NGC 2023 NGC 24 NGC 404 NGC 2082 NGC 2403 NGC 2060 NGC 2419Tài liệu tham khảo
WikiPedia: NGC_204 http://cseligman.com/text/atlas/ngc2.htm#204 http://ned.ipac.caltech.edu/cgi-bin/objsearch?objn... http://spider.seds.org/ngc/revngcic.cgi?NGC204 http://server1.wikisky.org/starview?object=NGC+204 http://www.wikisky.org/?object=NGC+204 http://www.wikisky.org/?object=NGC+204&img_source=... http://www.wikisky.org/?object=NGC+204&img_source=... http://www.wikisky.org/?object=NGC+204&img_source=... http://www.wikisky.org/?object=NGC+204&img_source=... http://www.wikisky.org/?object=NGC+204&img_source=...