TY - RPRT TI - Description of map units and discussion to accompany map showing surficial geology and geomorphology of the Palisades Creek Archeologic area, Grand Canyon National Park, Arizona AU - Richard Hereford PY - 1993 DO - 10.3133/ofr93553 UR - https://pubs.usgs.gov/publication/ofr93553 ID - ofr93553 ER -