General rules for the prevention of fire to be observed in wiring for the supply of electrical energy and terms and conditions of supply of electrical energy / W. A. Chamen
Coexistencia de líneas de baja tension / Manuel Marín
Formulaire de l'électricien et du mécanicien / É. Hospitalier; Gaston Roux
Materiais de construção / Thomaz Bordallo Pinheiro; João Emílio dos Santos Segurado