Sheet 1:50,000 Number 211 of North American photogrammetric flight Year 1956-1957
Description
Sheet 1:50,000 Number 211 of the photogrammetric flight Scale 1:33,000 carried out by the American Army in the years 1956 and 1957. This is the oldest and most complete photogrammetric flight available for the Autonomous Community of Aragon.
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