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  1. The head-capsule and mouth-parts of Diptera, with twenty-five plates, by Alvah Peterson.
    By: Peterson, Alvah,
    Publication info: Urbana,University of Illinois,1916
    Contributed by: University of Illinois Urbana Champaign
    View Book
  2. The head-capsule and mouth-parts of Diptera, with twenty-five plates, by Alvah Peterson.
    By: Peterson, Alvah,
    Publication info: Urbana,University of Illinois,1916
    Contributed by: Smithsonian Libraries
    BHL Collections: Smithsonian Libraries
    View Book