. Compte rendu. Science; Science -- Congresses. THÉVENET LE BOUL. — TRACTION ÉLECTRIQUE A CONTACT SUPERFICIEL 505 lion très efficace, grâce au cloisonnement des pièces isolantes; ils peuvent cou-. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Association franaise pour l'avancement des sciences. Paris, Secretariat de lAssociation

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