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  1. A biographical memoir of Samuel Hartlib, Milton's familiar friend; with bibliographical notices of works published by him; and a reprint of his pamphlet, entitled "An invention of engines of motion." / by H. Dircks.
    By: Dircks, Henry, - Dymock, Cressy.
    Publication info: London :J.R. Smith,[1865]
    Contributed by: University of California Libraries (archive.org)
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  2. The life, times and scientific labours of the second Marquis of Worcester To which is added, a reprint of his Century of inventions, 1663, with a commentary thereon, by Henry Dircks ...
    By: Dircks, Henry, - Worcester, Edward Somerset,
    Publication info: London :Quaritch,1865.
    Contributed by: University of California Libraries (archive.org)
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