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"EFH." Fullformexpand.com, https://www.fullformexpand.com/efh/819697. Accessed 17 Nov. 2025.
Fullformexpand.com, 2025. "EFH." Accessed November 17, 2025. https://www.fullformexpand.com/efh/819697.
"EFH." (n.d.). Fullformexpand.com. Retrieved November 17, 2025, from https://www.fullformexpand.com/efh/819697.
EFH. (2025). Fullformexpand.com. Available at: https://www.fullformexpand.com/efh/819697 (Accessed: 17 November 2025).