{"@type": "dcat:Dataset", "accessLevel": "restricted public", "accrualPeriodicity": "irregular", "bureauCode": ["026:00"], "contactPoint": {"@type": "vcard:Contact", "fn": "undefined", "hasEmail": "mailto:metadata@ciesin.columbia.edu"}, "description": "Data Dictionary and Index Files", "distribution": [{"@type": "dcat:Distribution", "description": "Maps Download Page", "downloadURL": "https://sedac.ciesin.columbia.edu/data/set/gpw-v4-population-density-rev11/maps", "format": "HTML", "mediaType": "text/html", "title": "Get a related map visualization"}, {"@type": "dcat:Distribution", "description": "Sample browse graphic of the data set.", "downloadURL": "https://sedac.ciesin.columbia.edu/downloads/maps/gpw-v4/gpw-v4-population-density-rev11/gpw-v4-population-density-rev11-global-2020.jpg", "format": "JPEG", "mediaType": "image/jpeg", "title": "Get a related visualization"}, {"@type": "dcat:Distribution", "description": "Search results for publications that cite this dataset by its DOI.", "downloadURL": "https://scholar.google.com/scholar?q=10.7927%2FH49C6VHW", "format": "HTML", "mediaType": "text/html", "title": "Google Scholar search results"}], "identifier": "NASA-641", "issued": "2018-06-25", "keyword": ["dictionary", "index", "pds"], "landingPage": "https://pds.jpl.nasa.gov/tools/subscription_service/SS-Release.shtml", "modified": "2025-07-17", "programCode": ["026:005"], "publisher": {"@type": "org:Organization", "name": "National Aeronautics and Space Administration"}, "references": ["https://pds.jpl.nasa.gov/"], "rights": null, "theme": ["Earth Science"], "title": "PDS Data Dictionary (1r69)"}