Estaciones e infraestructuras (1846-1972). Permanent way and buildings of the coal-hauling Langreo railway, opened standard gauge in 1852. The private company ceased operation in 1972, the railway was taken over by FEVE and converted to metre gauge. It included an inclined plane at Florida and the famous level crossing at El Berrón. 285 pages 17x24 cm, 123 drawings, track plans and photographs, hb.