0347名無しの車窓から垢版 | 大砲2020/05/27(水) 13:47:10.44ID:d4EkOQiF The Economics of Coal as a Locomotive Fuel on US Class I1 Railroads ttps://www.advanced-steam.org/wp-content/uploads/2017/07/John-Rhodes-Coal-Locomotive-Final-Paper.pdf