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PREAT A ULB - Conférence Bouillon 7.12.2007<br />
GTS: GEOLOGIC TIME SCALE<br />
2004<br />
à<br />
2008<br />
Gradstein&Ogg Young&Laurie<br />
GTS1982 GTS1989 Odin1994 1996 1996 Remane2000 GTS2004