The electrical engineer's pocket book : of modern rules, formulae, tables and data / H. R. Kempe
A pocket book of electrical rules & tables : for the use of electricians and Engineers and electro-metallurgists / John Munro; Andrew Jamieson
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