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SUBJECTS (1-2 之 2)
Thorium ores -- Alaska.
1 Preliminary summary of reconnaissance for uranium and thorium in Alaska, 1952, Wedow, Helmuth, 1917- Washington, 1953. 1953 評級: 複本
2 Preliminary summary review of thorium-bearing mineral occurrences in Alaska Bates, Robert Glenn, 1923- Washington : U.S. Dept. of the Interior, Geological Survey, 1953. 1953 評級: 複本
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Preliminary summary of reconnaissance for uranium and thorium in Alaska, 1952,