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keywords:(Air)

    Transporting marl with compressed air

    Engineering Index Backfile | 1923
    Keywords: Compressed air

    Hygienic aspects of railway air conditioning

    Yaglou, C.P. | Engineering Index Backfile | 1940
    Keywords: Air conditioning

    Railway view of refrigeration

    Elmes, C.C. | Engineering Index Backfile | 1937
    Keywords: Air conditioning

    Compressed air for street railway operation

    Cooke, H.D. | Engineering Index Backfile | 1900
    Keywords: Compressed-air railway

    $15,000,000 Re-divided

    Engineering Index Backfile | 1931
    Keywords: Air mail service