Abstract
A NEW seismograph station has been established at Lincoln, Nebraska, and new equipment has been installed at Chicago, Salt Lake City, and Bozeman, Montana, all co-operating stations of the United
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New Seismographic Equipment in the United States. Nature 145, 419 (1940). https://doi.org/10.1038/145419b0
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DOI: https://doi.org/10.1038/145419b0