Sort By:
  1. The conifers of the northern Rockies,
    By: Kirkwood, J. E.
    Publication info: Washington,Govt. print. off.,1918.
    Contributed by: University of California Libraries (archive.org)
    View Book
  2. Forest distribution in the northern Rocky Mountains,
    By: Kirkwood, J. E.
    Publication info: Missoula, Mont.,State University,1922.
    Contributed by: Cornell University Library
    View Book