In this video
Types of Aerial Photographs
वायव फोटो के प्रकार
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Credits:
source: Nederlands Instituut voor Militaire Historie/Wikimedia Commons.
https://gencat4.eloquent-systems.com/webcat/systems/toronto.arch/resource/fo1244/f1244_it2431.jpg
Creative Commons Attribution-Share Alike 3.0 Germany license.
Attribution: Bundesarchiv, Bild 146-1993-069-16 / CC-BY-SA 3.0
music by www.audionautix.com