Calculator d'Estime Thedenat-Lepetit by Etablissements A. Lepetit
Calculator d'Estime Thedenat-Lepetit by Etablissements A. Lepetit, Montrouge, Seine, calculating device for aerial navigation
Calculator d'Estime Thedenat-Lepetit by Etablissements A. Lepetit, Montrouge, Seine, calculating device for aerial navigation