Canker-worms
Series: Circular / U.S. Department of Agriculture. Division of Entomology -- no. 9, sec. ser.; Circular (United States. Division of Entomology) -- 2nd ser., no. 9.
Publisher: U.S. Dept. of Agriculture
Published: 1895
Place of publication: Washington
Language: eng
Subjects: Geometridae; Canker-worms