dcsimg
Please read BHL's Acknowledgment of Harmful Content
Sort By:
  1. By: Benson, Mary F. - United States. Bureau of Entomology and Plant Quarantine.
    Edition: Rev. Nov. 1950.
    Publication info: [Washington, D.C.], Bureau of Entomology and Plant Quarantine, Agricultural Research Administration, U.S. Dept. of Agriculture, 1950
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
    Subjects: Empoasca fabae  
  2. By: Benson, Mary F. - United States. Bureau of Entomology and Plant Quarantine.
    Publication info: [Washington, D.C.], Bureau of Entomology and Plant Quarantine, U.S. Dept. of Agriculture, 1941
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
    Subjects: Diseases and pests  Empoasca fabae  Internet resource  Leafhoppers  Potatoes