TY - MAP ID - 137403360 TI - Preliminary geologic map of east half of Canyon City belt of ultramafic rocks, Grant County, Oregon PY - 1940 PB - Washington (D.C.) U.S. Geological Survey DB - UniCat UR - https://www.unicat.be/uniCat?func=search&query=sysid:137403360 AB - ER -