TY - RPRT TI - Stratigraphic revision and depositional environments of the Upper Cretaceous Toreva Formation in the northern Black Mesa area, Navajo and Apache Counties, Arizona AU - Karen J. Franczyk PY - 1988 DO - 10.3133/b1685 UR - https://pubs.usgs.gov/publication/b1685 ID - b1685 ER -