Walnut husk-maggot
Brooks, Fred E. (Fred Ernest),
1868-1933
creator
text
book
Washington, D.C
U.S. Dept. of Agriculture
1921
1921
ENG
Caption title.
"November 4, 1921."
Diseases and pests
Walnut
Walnut husk maggot
Bulletin of the U.S. Department of Agriculture, no. 992
https://www.biodiversitylibrary.org/bibliography/109238
16654798890420
10.5962/bhl.title.109238
RQF