000			00383nam a2200133Ia 4500
008			211224s9999 xx 000 0 und d
020			_a9780521786737
082			_a551.7/01 GRA
245		2	_aA geologic time scale 2004
260			_aCambridge: _bCambridge University Press, _c2004
300			_axix, 589 p. : ill., maps ; 29 cm
650			_aGeological time
700			_aGradstein, F. M
999			_c4870 _d4870