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Keywords from Image Description:
Tour Eiffel Arbaltrires et treillis pour le calcul de l'ossature. Image libre de droits issu de l'ouvrage La Tour de mtres Paris Lemercier vol Texte TII Planches Atlas Planche XXXI double Arbaltrires et treillis pour le calcul de l'ossature Source bnf fr htm PDold Architectural drawings of the Eiffel Tower