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    Die federnden Zahnrader der Lotschberg-Lokomotiven, Typ 1-E-l

    Kummer, W. | Engineering Index Backfile | 1916

    Frequency of railroad trips of various lengths

    Kummer, W. | Engineering Index Backfile | 1930

    Plasticity of tachykinins in allergic airway inflammation

    Fischer, A. / deVries, A. / Nijkamp, F. P. et al. | British Library Conference Proceedings | 2000

    Power recuperation and fluctuations in electric railroad practice

    Kummer, W. | Engineering Index Backfile | 1929

    Special locomotives for alpine electric railways

    Kummer, W. | Engineering Index Backfile | 1909

    Specific power consumption of mountain railroads

    Kummer, W. | Engineering Index Backfile | 1929

    The electric railway from Biasca to Acquarossa

    Kummer, W. | Engineering Index Backfile | 1911

    The Four Forces of Nature

    Kummer, W. | British Library Online Contents | 1997

    The Gotthard railway and Giovi system

    Kummer, W. | Engineering Index Backfile | 1912