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Roger Warren Swanson
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Geology and phosphate deposits of the Permian rocks in central western Montana
Roger Warren Swanson · U.S. Govt. Print. Off.
883 sayfa · 1973
Geology / Phosphates / Sedimentary Rocks / Sedimentary rocks
Mineral resources in Permian rocks of southwest Montana
Roger Warren Swanson · U.S. Govt. Print. Off.
777 sayfa · 1970
Mines and mineral resources / Phosphates / Stratigraphic Geology
Stratigraphic sections of the Phosphoria Formation in Montana, 1947-48
Roger Warren Swanson · U.S. Department of the Interior, Geological Survey
31 sayfa · 1953
Stratigraphic Geology / Phosphate rock
Stratigraphic sections of the phosphoria formation, 1953
Roger Warren Swanson · U.S. Department of the Interior, Geological Survey
30 sayfa · 1956
Stratigraphic Geology / Phosphate rock
Geologic names of the United States through 1975
Roger Warren Swanson · For sale by the Supt. of Docs., U.S. G.P.O.
643 sayfa · 1981
Stratigraphic Geology / Nomenclature / Geology