Protection of shade trees in cities and towns (1900)
[New Haven] : Connecticut Agricultural Experiment Station · leaf 40
Fig. 9.—Work of Elm Borer.(After Felt.) Fig. 7.—Adult Maple Borers.(After Felt.) … f7,f: Fig. 10.—Work of Maple Borer nearly girdling the tree. PLATE V
Trees · Ornamental trees
Internet Archive · University of Connecticut Library · Public Domain Mark 1.0. Free to use for anything.
