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Fullformexpand.com, 2025. "GBPF." Accessed November 20, 2025. https://www.fullformexpand.com/gbpf/36509.
"GBPF." (n.d.). Fullformexpand.com. Retrieved November 20, 2025, from https://www.fullformexpand.com/gbpf/36509.
GBPF. (2025). Fullformexpand.com. Available at: https://www.fullformexpand.com/gbpf/36509 (Accessed: 20 November 2025).