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RIDEAL, SAMUEL, D. Sc. Glue and Glue Testing, 



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RINGWALT, J. L. Development of Transportation 



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RIPPER, WILLIAM. A Course of Instruction in 



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ROBERTSON, L. S. Water-tube Boilers. Based on 



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ROEBLING, J. A. Long and Short Span Railway 



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ROSE, JOSHUA, M.E. The Pattern-Makers' Assistant. 



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Key to Engines and Engine-running. A Practical 



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ROWAN, FREDERICK J. The Practical Physics of 



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