http://comunidad.ciudad.com.ar/ciudadanos/trazom/Folklore/Instrumentos%20Musicales/Charango/charango.htm
http://www.ancient-future.com/guitar/charango
http://www.frii.net/~brain/charango/
... the Piccadilly Line) These stations once served by the Metropolitan Line, District Line or Northern City Line (Great Northern & City Railway) remain open as mainline ...