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A declaration concerning the newly invented art of double writing : wherein are expressed the reasons of the authors proceedings in procuring a priviledge for the same : as also of... by Petty, William, Sir, 1623-1687

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Pantograph and contact line system / Wu Jiqin. by Wu, Jiqin

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Detection and Estimation Research of High-speed Railway Catenary. by Liu, Zhigang

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Pantograph adjustment / G.C. Tewinkel. by Tewinkel, G. C.

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The electrical contact of the pantograph-catenary system : theory and application / Guangning Wu, Guoqiang Gao, Wenfu Wei, Zefeng Yang. by Wu, Guangning, Gao, Guoqiang, Wei, Wenfu, Yang, Zefeng

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The pentagraph; improved by Henry Pyefinch, optician, Cornhill, London by Pyefinch, Henry

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