Processo do símbolo da cortiça : CorkMark / Maria Carolina Varela
Problèmes et calculs pratiques d'électricité / M. Aimé Witz
Lightning conductors and lightning guards : a treatise on the protection of buildings, of telegraph instruments and submarine cables, and of electric installations generally, from damage by atmospheric discharges / Oliver J. Lodge
Manuel de l'ingénieur / Hütte; trad. L. Desmarest