2000. Harvard Map Collection, United States. National Imagery and Mapping Agency, and Land Info (Firm). This polygon is an index to 1:500,000 scale maps of the world, titled 1:500,000 TPC (Tactical Pilotage Charts) : worldwide US military aviation/top... Harvard Map Collection.
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1997. United States. National Imagery and Mapping Agency. This datalayer is a polyline coverage representing major roads worldwide and was published as part of the USGS Global GIS : global coverage databas... American Geological Institute.
1997. United States. National Imagery and Mapping Agency. This datalayer is a point coverage representing worldwide navigational hazards or dangers near ocean and navigable lake coastlines and was publishe... American Geological Institute.
1997. United States. National Imagery and Mapping Agency. This datalayer is a polygon coverage representing land ice areas (snow fields or ice fields which are on land) worldwide and was published as part ... American Geological Institute.
1997. United States. National Imagery and Mapping Agency. This datalayer is a point coverage representing worldwide miscellaneous hydrography point features and was published as part of the USGS Global GIS... American Geological Institute.
1997. United States. National Imagery and Mapping Agency. This datalayer is a point coverage representing worldwide miscellaneous industry point features and was published as part of the USGS Global GIS : ... American Geological Institute.
1997. United States. National Imagery and Mapping Agency. This datalayer is a polygon coverage representing worldwide locations where natural resources are being extracted from the earth and locations wher... American Geological Institute.
1997. United States. National Imagery and Mapping Agency. This datalayer is a point coverage representing worldwide locations where natural resources are being extracted from the earth. It was published as... American Geological Institute.
1997. United States. National Imagery and Mapping Agency. This datalayer is a point coverage representing worldwide storage point features and was published as part of the USGS Global GIS : global coverage... American Geological Institute.
1997. United States. National Imagery and Mapping Agency. This datalayer is a point coverage representing worldwide utility point features and was published as part of the USGS Global GIS : global coverage... American Geological Institute.