Leaf hopper injurious to cereal and forage crops Osborn, Herbert 1856-1954 creator text book Washington, D.C U.S. Dept. of Agriculture 1932 1932
print
ENG Caption title. "Contribution from Bureau of Entomology." Control Diseases and pests Forage plants Grain Leafhoppers Circular (United States. Dept. of Agriculture), no. 241 https://www.biodiversitylibrary.org/bibliography/64111 16680160890420 10.5962/bhl.title.64111 RQF