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Columbit Columbia Pictures Columbia, South Carolina Columbia Columbimorphae Columbia (tên) Columbia, Missouri Columbia Records Columbia (siêu lục địa) Columbina passerinaTài liệu tham khảo
WikiPedia: Columbit http://webmineral.com/data/Columbite-(Fe).shtml http://rruff.geo.arizona.edu/doclib/cm/vol30/CM30_... http://www.mindat.org/min-1514.html http://www.mindat.org/min-3882.html http://www.minsocam.org/ammin/AM66/AM66_885.pdf http://rsnr.royalsocietypublishing.org/content/57/... https://books.google.com/books?id=UL8TAAAAYAAJ&pg=... https://www.mineralienatlas.de/lexikon/index.php/M... https://archive.org/details/mobot31753002152251