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"O&D." Fullformexpand.com, https://www.fullformexpand.com/od/442095. Accessed 15 Dec. 2025.
Fullformexpand.com, 2025. "O&D." Accessed December 15, 2025. https://www.fullformexpand.com/od/442095.
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O&D. (2025). Fullformexpand.com. Available at: https://www.fullformexpand.com/od/442095 (Accessed: 15 December 2025).