TAPA DURA, LIBRO USADO, RECUERDA QUE EL 10% DE ESTA VENTA COLABORA CON FUNDACIONES QUE FOMENTAN LA LECTURA EN ZONAS VULNERABLES. This fourth edition aims to bring the reader up to date with recent changes in the London Metal Exchange. Aluminium, copper, lead, nickel, tin and zinc are all covered individually in terms of production and consumption figures and price graphs.