IGN Planimetries, Altimemetries and Joints
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https://data.europa.eu/data/datasets/spaignplanialticonjserie?locale=en
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资源简介：
Raster files corresponding to the digitisation of paper-based manuscript maps retained in the IGN Topographic Archive. This type of document was mainly made between 1870 and 1950 from measurements made in the field that are collected in the field notebooks kept in the Topographic Archive of the IGN. They are drawn at 1:25,000 scale and served as the basis for their integration into the 1:50,000 National Topographic Map Sheets.
提供机构：
Centro Nacional de Informacion Geográfica
