USGS Denver Library Photographic Collection
收藏DataONE2016-10-29 更新2024-06-26 收录
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https://search.dataone.org/view/0d176010-7af9-4a1c-b5b3-402d2f4f41f4
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资源简介：
The U.S. Geological Survey Denver Library maintains a collection of more than 400,000 photographs taken during geologic studies of the United States and its territories from 1868 to the present. These images provide a visual history of the discovery, development, and sciences of the United States and its Geological Survey. Some photographs have been used in USGS publications, but most have never been published. Currently, this website represents less than 10 percent of the Library's images with approximately 38,000 photographs on-line.
创建时间：
2016-12-01
