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  1. From nebula to nebula : or, The dynamics of the heavens, containing a broad outline of the history of astronomy, a general summary of its achievements, a synopsis and criticism of recent cosmological theories, and especially by George Henry Lepper.
    By: Lepper, George Henry.
    Edition: 3d ed. rewritten and enl.
    Publication info: Pittsburgh :Priv. print. [Pittsburgh printing company]1917.
    Contributed by: University of California Libraries (archive.org)
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  2. From nebula to nebula; being an expansion of the principle of universal gravitation to the solution of cosmic problems in general, by George Henry Lepper...
    By: Lepper, George Henry.
    Publication info: Pittsburgh, Pa.,Priv. pub. [Smith bros. co.]1912.
    Contributed by: University of California Libraries (archive.org)
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  3. From nebula to nebula; or, The dynamics of the heavens, containing a broad outline of the history of astronomy, a general summary of its achievements, a synopsis and criticism of recent cosmological theories, and especially by George Henry Lepper...
    By: Lepper, George Henry.
    Edition: 4th ed., rev. and enl.
    Publication info: Pittsburgh, Pa. :Priv. print. [Pittsburgh printing company],1919.
    Contributed by: University of California Libraries (archive.org)
    View Book