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Fullformexpand.com, 2025. "EFK." Accessed December 2, 2025. https://www.fullformexpand.com/efk/574191.
"EFK." (n.d.). Fullformexpand.com. Retrieved December 2, 2025, from https://www.fullformexpand.com/efk/574191.
EFK. (2025). Fullformexpand.com. Available at: https://www.fullformexpand.com/efk/574191 (Accessed: 2 December 2025).