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"NBU." Fullformexpand.com, https://www.fullformexpand.com/nbu/242226. Accessed 21 Nov. 2025.
Fullformexpand.com, 2025. "NBU." Accessed November 21, 2025. https://www.fullformexpand.com/nbu/242226.
"NBU." (n.d.). Fullformexpand.com. Retrieved November 21, 2025, from https://www.fullformexpand.com/nbu/242226.
NBU. (2025). Fullformexpand.com. Available at: https://www.fullformexpand.com/nbu/242226 (Accessed: 21 November 2025).