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"ASTIG." Fullformexpand.com, https://www.fullformexpand.com/astig/180826. Accessed 20 Nov. 2025.
Fullformexpand.com, 2025. "ASTIG." Accessed November 20, 2025. https://www.fullformexpand.com/astig/180826.
"ASTIG." (n.d.). Fullformexpand.com. Retrieved November 20, 2025, from https://www.fullformexpand.com/astig/180826.
ASTIG. (2025). Fullformexpand.com. Available at: https://www.fullformexpand.com/astig/180826 (Accessed: 20 November 2025).