Operadora Ferroviaria Sociedad del Estado Argentina. The list includes urban railways such as Mitre, San Martín, Roca and Belgrano Sur lines previously managed by private companies. The "Binational" service Posadas-Encarnación is run by Casimiro Zbikoski S.A. through an operation agreement with SOFSE. Commuter rail services within the Buenos Aires Province: Inter-city services along Argentina: Operadora Ferroviaria Sociedad del Estado Operadora Ferroviaria Sociedad del Estado (abbreviated SOFSE; trading name: Trenes Argentinos Operaciones) is an Argentine State-owned company created in 2008 to operate passenger services in Argentina. It is a subsidiary of the Ferrocarriles Argentinos holding company. Since March 2015 SOFSE has run the Buenos Aires commuter
What Is and What Should Never Be What Is and What Should Never Be "What Is and What Should Never Be" is a song by English rock band Led Zeppelin. It was written by Jimmy Page and Robert Plant and was included as the second track on "Led Zeppelin II" (1969). "What is and What Should Never Be" was one of the first songs on which Page used his soon-to-become trademark Gibson Les Paul for recording. The production makes liberal use of stereo as the guitars pan back and forth between channels. Robert Plant's vocals were phased during the verses. Record producer Rick Rubin has remarked, "The