Aphids on leafy vegetables : how to control them /
Reid, W. J.(William John),1902-
Cuthbert, Frank P.,1922-
United States.Department of Agriculture.
Washington, D.C. : U.S. Dept. of Agriculture,
1960.
Cover title.
Supersedes Farmers' bulletin 1863, The turnip aphid in the southern states and methods for its control.
Aphids.
Aphids