Madrid special sheet of Spain National Topographic Map at 1:25,000 scale (MTN25). Year 1975 edition.
<bdi><a href="https://en.wikipedia.org/wiki/en:Instituto_Geogr%C3%A1fico_Nacional_(Spain)" class="extiw" title="w:en:Instituto Geográfico Nacional (Spain)"><span title="Spain government cartographic department">Instituto Geográfico Nacional</span></a>
</bdi>
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