World Programme of Geological Correlation
International Union of Geological Sciences. International Geological Correlation Programme
Unesco. International Geological Correlation Programme
Programme international de correlation géologique
Mezhdunarodnai︠a︡ programma geologicheskikh korreli︠a︡t︠s︡iĭ
Mizhnarodnai︠a︡ prahrama healahichnykh karėli︠a︡tsyĭ
Mezhdunarodnai︠a︡ programma geologicheskoĭ korreli︠a︡t︠s︡ii
Programa Internacional de Correlación Geológica
International Geological Correlation Project
International Geological Correlation Program
Kuo chi ti chih tui pi chi hua
Kuo chi ti chih ho tso chi hua (Program)
International Geological Collaboration Programme