1968 – 2008 Moving Toward Green: Forty Years of Railroad Environmental Practice Barkan, C.P.L. 2008. 1968 - 2008 Moving Toward Green: Forty Years of Railroad Environmental Practice. Railway Age. 209: October, pp. 24-27. Files 1968 – 2008 Moving Toward Green: Forty Years of Railroad Environmental Practice - Full Text (PDF) Categories Other
