TY - BOOK AU - Lillis, Paul G. AU - Bethke, Philip Martin, CN - I 19.76: CY - [Denver, Colo.] : DA - 2001. ID - 259200 KW - Geology, Stratigraphic KW - Organic geochemistry N1 - Cover title. N1 - "P.M. Bethke, editor." N1 - Shipping list no.: 2002-0363-M. PB - U.S. Dept. of the Interior, U.S. Geological Survey, PP - [Denver, Colo.] : PY - 2001. T1 - Preliminary results on the organic geochemistry of the Oligocene Creede Formation, Colorado TI - Preliminary results on the organic geochemistry of the Oligocene Creede Formation, Colorado VL - 94-260-L ER -