. Steel rails; their history, properties, strength and manufacture, with notes on the principles of rolling stock and track design . 60000 60000 ^^.^=*=^^. 60 Ml. PER 5JDE lO Ml. PEB HR. 70000 60OOO 50000 ?oooo eoooo soooo 70000 ^-^ <°- / ^^^ y \, ^——^ i^ii ao Ml PER HR.

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Keywords: ., bookcentury1900, bookdecade1910, bookidsteelrailsth, bookyear1913