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1967. This georeferenced raster layer represents agricultural production in China in 1967. It is taken from the book, Communist China: Map Folio, which w... Directorate of Intelligence, Office of Basic and Geographic Intelligence.
1945. VMap1 is a vector digital topographic reference product developed by Natural Resources Canada (NRCan) and The Department of National Defence (DND).... Canada Centre for Mapping and Earth Observation.