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U.S. Geological Survey scientific activities in the exploration of Antarctica, 1946-2006 record of personnel in Antarctica and their postal cachets [electronic resource] : U.S. Navy (1946-48, 1954-60), International Geophysical Year (1957-58), and USGS (1960-2006) / by Tony K. Meunier ; Richard S. Williams, Jr., and Jane G. Ferrigno, editors ; prepared in cooperation with United States Antarctic Program, National Science Foundation. |
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