TY - RPRT TI - Summary report on the geology and mineral resources of the Three Arch Rocks National Wildlife Refuge, Oregon AU - Albert Edward Weissenborn AU - Parke Detweiler Snavely PY - 1968 DO - 10.3133/b1260h UR - https://pubs.usgs.gov/publication/b1260H ID - b1260H ER -