000			00594nam a2200205Ia 4500
005			20250425161600.0
008			250425s9999 xx 000 0 und d
041			_aeng
082			_a552.5
100			_aSHROCK, ROBERT R.
245		0	_aSEQUENCE IN LAYERED ROCKS; A STUDY OF FEATURES AND STRUCTURES USEFUL FOR DETERMINING TOP AND BOTTOM OR ORDER OF SUCCESSION IN BEDDED AND TABULAR ROCK BODIES
250			_aS.E.
260			_aEstados Unidos _bMCGRAW HILL _c1950
260			_aNEW YORK
300			_a507
650			_aPETROLOGIA
650			_aROCAS
942			_c01
010			_a23452
999			_c211999 _d211999