"columbium ." The Oxford Pocket Dictionary of Current English. . Encyclopedia.com. (January 9, 2025). https://www.encyclopedia.com/humanities/dictionaries-thesauruses-pictures-and-press-releases/columbium-0

"columbium ." The Oxford Pocket Dictionary of Current English. . Retrieved January 09, 2025 from Encyclopedia.com: https://www.encyclopedia.com/humanities/dictionaries-thesauruses-pictures-and-press-releases/columbium-0

"CB ." The Oxford Pocket Dictionary of Current English. . Encyclopedia.com. (January 9, 2025). https://www.encyclopedia.com/humanities/dictionaries-thesauruses-pictures-and-press-releases/cb-1

"CB ." The Oxford Pocket Dictionary of Current English. . Retrieved January 09, 2025 from Encyclopedia.com: https://www.encyclopedia.com/humanities/dictionaries-thesauruses-pictures-and-press-releases/cb-1

"columbium ." World Encyclopedia. . Encyclopedia.com. (January 9, 2025). https://www.encyclopedia.com/environment/encyclopedias-almanacs-transcripts-and-maps/columbium

"columbium ." World Encyclopedia. . Retrieved January 09, 2025 from Encyclopedia.com: https://www.encyclopedia.com/environment/encyclopedias-almanacs-transcripts-and-maps/columbium

MICHAEL KENNEDY and JOYCE BOURNE "CB ." The Concise Oxford Dictionary of Music. . Encyclopedia.com. (January 9, 2025). https://www.encyclopedia.com/arts/dictionaries-thesauruses-pictures-and-press-releases/cb

MICHAEL KENNEDY and JOYCE BOURNE "CB ." The Concise Oxford Dictionary of Music. . Retrieved January 09, 2025 from Encyclopedia.com: https://www.encyclopedia.com/arts/dictionaries-thesauruses-pictures-and-press-releases/cb