TY - BOOK AU - AU - ED - ED - ED - ED - TI - : a study of featured and structures useful for determining top and buttom or order of succession in bended and tabular rock bodies SN - 2 PY - 1948///46 CY - New York PB - McGraw Hill Book Company, Inc KW - KW - 2 KW - 0 KW - 6 KW - 20 N1 - 5 ER -