TY - RPRT TI - Preliminary report on the petrography of the Upper Jurassic Morrison Formation, Mariano Lake-Lake Valley drilling project, McKinley County, New Mexico AU - B.A. Steele PY - 1984 DO - 10.3133/ofr84170 UR - https://pubs.usgs.gov/publication/ofr84170 ID - ofr84170 ER -