2005. GeoAccess Division, Canada Centre for Remote Sensing, Natural Resources Canada, Government of Canada and Geographical Survey Institute. Canada Elevation is a Digital Elevation Model representing elevations throughout Canada at a resolution of 30 arc seconds. This layer is a compone... GeoAccess Division, Canada Centre for Remote Sensing, Natural Resources Canada, Government of Canada.
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1997. National Imagery and Mapping Agency. Water Depth Lines (Bathymetry) is a polyline theme representing hydrographic depth contour lines located throughout the World. This dataset is par... National Imagery and Mapping Agency.
1997. National Imagery and Mapping Agency. World Contour Lines is a polyline theme representing land elevation throughout the world. This dataset is part of the Vector Map Level 0 database.... National Imagery and Mapping Agency.
2010. DeLorme Publishing Company, Inc. and Economic and Social Research Institute (Reston, Va.). World Contours is a line theme representing elevation at 600-meter intervals world-wide. ESRI.
2010. DeLorme Publishing Company, Inc. and Environmental Systems Research Institute (Redlands, Calif.). World Contours is a line theme representing elevation at 600-meter intervals world-wide. Esri.
1997. National Imagery and Mapping Agency. World Spot Elevations is a point theme representing spot elevations world wide. This dataset is part of the Vector Map Level 0 database. The Vecto... National Imagery and Mapping Agency.