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  1. Entomology : with special reference to its biological and economic aspects / by Justus Watson Folsom.
    By: Folsom, Justus Watson,
    Publication info: Philadelphia :P. Blakiston's Son,1906.
    Contributed by: Robarts - University of Toronto (archive.org)
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  2. Entomology : with special reference to its biological and economic aspects.
    By: Folsom, Justus Watson,
    Publication info: London,Rebman,1906.
    Contributed by: Gerstein - University of Toronto (archive.org)
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  3. Entomology : with special reference to its ecological aspects / by Justus Watson Folsom.
    By: Folsom, Justus Watson,
    Edition: 3rd rev. ed.
    Publication info: Philadelphia :P. Blakiston's Son,c1922.
    Contributed by: Gerstein - University of Toronto (archive.org)
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  4. Entomology, with special reference to its biological and economic aspects, by Justus Watson Folsom ...
    By: Folsom, Justus Watson,
    Edition: 2d rev. ed., with four plates and 304 text-figures.
    Publication info: Philadelphia,P. Blakiston's son & co.,1913.
    Contributed by: University of California Libraries (archive.org)
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  5. Entomology, with special reference to its biological and economic aspects, by Justus Watson Folsom.
    By: Folsom, Justus Watson,
    Publication info: Philadelphia,P. Blakiston's[1906]
    Contributed by: NCSU Libraries (archive.org)
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  6. Entomology, with special reference to its biological and economic aspects.
    By: Folsom, Justus Watson,
    Edition: 2d rev ed., with four plates and 304 text-figures.
    Publication info: Philadelphia,Blakiston,1913.
    Contributed by: MBLWHOI Library
    BHL Collections: MBLWHOI Library, Woods Hole
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  7. Entomology, with special reference to its biological and economic aspects, by Justus Watson Folsom ... with five plates (one colored) and 300 text-figures.
    By: Folsom, Justus Watson,
    Publication info: Philadelphia,P. Blakiston's Son & Co.,1906.
    Contributed by: Smithsonian Libraries
    BHL Collections: Smithsonian Libraries
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  8. Entomology, with special reference to its ecological aspects, by Justus Watson Folsom.
    By: Folsom, Justus Watson,
    Edition: 3d rev. ed., with 5 plates and 308 text-figures.
    Publication info: Philadelphia,P. Blakiston[c1922]
    Contributed by: NCSU Libraries (archive.org)
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  9. Entomology, with special reference to its ecological aspects, by Justus Watson Folsom ...
    By: Folsom, Justus Watson,
    Edition: 3d rev. ed., with five plates and 308 text-figures.
    Publication info: Philadelphia,P. Blakiston's Son & Co.[c1922]
    Contributed by: University of California Libraries (archive.org)
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  10. Insects. Part A Collembola /
    By: Folsom, Justus Watson, - Canadian Arctic Expedition
    Publication info: Ottawa :J. de L. Taché,1919.
    Contributed by: Canadiana.org (archive.org)
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  11. A new Entomobrya / by J.W. Folsom.
    By: Folsom, Justus Watson, - New York Zoological Society.
    Publication info: New York :New York Zoological Society,1921
    Contributed by: Smithsonian Libraries
    BHL Collections: Smithsonian Libraries
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