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            "isPartOf": "https://doi.org/10.21949/1504517",
            "issued": "2002-01-01",
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            "license": "https://creativecommons.org/publicdomain/zero/1.0/legalcode",
            "modified": "2025-08-20",
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            "spatial": "United States",
            "title": "National Transportation Atlas Database (NTAD): Military Installations 2002-Present Datasetss",
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