TY - RPRT TI - Proterozoic sequences and their implications for Precambrian and Cambrian geologic evolution of western Kentucky: Evidence from seismic-reflection data AU - James A. Drahovzal PY - 1997 DO - 10.1785/gssrl.68.4.553 UR - https://pubs.usgs.gov/publication/70019864 ID - 70019864 ER -