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Richard Swann Lull

    Fossils What They Tell Us Of Plants And Animals Of The Past
    Organic Evolution: A Text Book
    The Evolution of Man: a Series of Lectures Delivered Before the Yale Chapter of the Sigma xi During the Academic Year 1921-1922
    A Remarkable Ground Sloth: 3 pt.2
    Collected Papers; Volume 2
    A Revision of the Ceratopsia or Horned Dinosaurs: 3 pt.3