Cypress bark scale
By: F.B. Herbert
Series: Bulletin / United States Department of Agriculture -- no. 838; Bulletin of the U.S. Department of Agriculture -- no. 838.
Publisher: U.S. Dept. of Agriculture
Published: 1920
Place of publication: Washington, D.C
Language: eng
Number of pages: 22
Subjects: Cypress; Diseases and pests; Scale insects
Notes: Caption title.

"June 5, 1920."

"Professional paper."