46 D. VAN NOSTRAND COMPANY'S 



URQUHART, J. W. Dynamo Construction: a Prac- 

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UNIVERSAL TELEGRAPH CIPHER CODE. Ar- 

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VAN NOSTRAND'S Engineering Magazine. Com- 

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VAN NOSTRAND'S Year Book of Mechanical En- 

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VAN WAGENEN, T. F. Manual of Hydraulic Mining. 



For the Use of the Practical Miner. Revised and enlarged edition. 

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VILLON, A. M. Practical Treatise on the Leather 

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VINCENT, CAMILLE. Ammonia and its Com- 

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VOLK, C. Haulage and Winding Appliances Used in 



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VON GEORGIEVICS, GEORG. Chemical Technology 



of Textile Fibres ; Their Origin, Structure, Preparation, Washing, 

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Contents. The Textile Fibres ; Washing, Bleaching and Carbon- 

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Chemistry of Dye-Stuffs. Translated from the 



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