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Fullformexpand.com, 2025. "QDB." Accessed November 30, 2025. https://www.fullformexpand.com/qdb/460964.
"QDB." (n.d.). Fullformexpand.com. Retrieved November 30, 2025, from https://www.fullformexpand.com/qdb/460964.
QDB. (2025). Fullformexpand.com. Available at: https://www.fullformexpand.com/qdb/460964 (Accessed: 30 November 2025).