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Keywords from Image Description:
Treatise for Observers on Constructing the Circle of Projection WDL. Artwork ru fr Muhammad Abi alFat alf en Muammad Abi alFat alf zh Muammad Abi alFat alf pt Muhammad Abi alFat alf ar es Muammad Abi alFat alf ru fr Trait pour des observateurs sur la construction du cercle de projection en Treatise for Observers