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"GSPIE." (n.d.). Fullformexpand.com. Retrieved April 25, 2026, from https://www.fullformexpand.com/gspie/geography-society-political-innovation-economic.
GSPIE. (2026). Fullformexpand.com. Available at: https://www.fullformexpand.com/gspie/geography-society-political-innovation-economic (Accessed: 25 April 2026).