TY - RPRT TI - Stratigraphy of the Cretaceous rocks and the Tertiary Ojo Alamo Sandstone, Navajo and Hopi Indian Reservations, Arizona, New Mexico, and Utah AU - R. B. O'Sullivan AU - C.A. Repenning AU - E. C. Beaumont AU - H. G. Page PY - 1972 DO - 10.3133/pp521e UR - https://pubs.usgs.gov/publication/pp521E ID - pp521E ER -