File:Alice Dowse Weeks, Geologist, operating an ultrasonic generator. Rapid Rock Analysis Laboratory, USGS Geologic Division, Washington, D.C. 1958.jpg
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current | 06:40, 12 March 2023 | 2,644 × 2,044 (821 KB) | Albionfireandice | Uploaded a work by Data Owner : U.S. Geological Survey Photographer : Patterson, E.F. from https://www.sciencebase.gov/catalog/item/617aa669d34ea58c3c6ffe03 with UploadWizard |
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