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1972
Christiansen, Robert L., and Jr. Blank, H. Richard. Volcanic Stratigraphy of the Quaternary Rhyolite Plateau in Yellowstone National Park In U. S. Geological Survey Professional Paper. Vol. 729-B. Department of the Interior, 1972.
1966
Blank, H. Richard, Jr.. General Feature of the Bouguer Gravity Field in Southwestern Oregon In U. S. Geological Survey Professional Paper. Vol. 550-C. Department of the Interior, 1966.