Biodiversity Heritage Library
By "Spaulding, Perley, "
Diseases of deciduous forest trees,
By: Schrenk, Hermann von, - Spaulding, Perley,
Publication info: Washington, D.C.Govt. Print. Off.1909
Contributed by: Earth Sciences - University of Toronto (archive.org)
Investigations of the white-pine blister rust /
By: Spaulding, Perley,
Publication info: Washington, D.C. :U.S. Dept. of Agriculture,1922.
Contributed by: U.S. Department of Agriculture, National Agricultural Library