Ce manuel détaillé de télégraphie électrique offre une introduction complète à l'électricité et au magnétisme appliqués à la communication à distance. Il a été écrit par trois experts en la matière et est destiné aux étudiants, aux ingénieurs et à toute personne intéressée par cette technologie fascinante. C'est un livre qui restera utile pendant des années à venir.

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