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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Benson, Mary F. - United States. Bureau of Entomology and Plant Quarantine.
    Edition: Rev. Apr. 1949.
    Publication info: Washington, D.C, U.S. G.P.O, 1949
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  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, 1937
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  3. By: Benson, Mary F. - United States. Bureau of Entomology and Plant Quarantine.
    Edition: Rev. Aug. 1950.
    Publication info: [Washington, D.C.], Bureau of Entomology and Plant Quarantine, U.S. Dept. of Agriculture, 1950
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  4. 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, 1951
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  5. By: Benson, Mary F. - United States. Bureau of Entomology and Plant Quarantine. - United States. Office of Experiment Stations.
    Publication info: [Washington, D.C.], Bureau of Entomology and Plant Quarantine, U.S. Dept. of Agriculture, 1941
    Holding Institution: Multiple institutions
    BHL Collections: Expanding Access to Biodiversity Literature
  6. By: Benson, Mary F. - United States. Bureau of Entomology and Plant Quarantine.
    Edition: Rev. Aug. 1950.
    Publication info: [Washington, D.C.], Bureau of Entomology and Plant Quarantine, U.S. Dept. of Agriculture, 1950
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  7. 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
  8. By: Benson, Mary F. - United States. Bureau of Entomology and Plant Quarantine.
    Edition: Rev. June 1950.
    Publication info: [Washington, D.C.], Bureau of Entomology and Plant Quarantine, U.S. Dept. of Agriculture, 1950
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  9. By: Benson, Mary F. - United States. Bureau of Entomology and Plant Quarantine. - United States. Office of Experiment Stations.
    Publication info: [Washington, D.C.], Bureau of Entomology and Plant Quarantine, U.S. Dept. of Agriculture, 1940
    Holding Institution: Multiple institutions
    BHL Collections: Expanding Access to Biodiversity Literature
  10. By: Benson, Mary F. - United States. Bureau of Entomology and Plant Quarantine.
    Edition: [Rev. Dec. 1949].
    Publication info: [Washington, D.C.], Bureau of Entomology and Plant Quarantine, U.S. Dept. of Agriculture, 1949
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  11. 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
  12. 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, 1937
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  13. 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
  14. 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
  15. 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
  16. By: Benson, Mary F. - United States. Bureau of Entomology and Plant Quarantine.
    Edition: Rev. June 1950.
    Publication info: [Washington, D.C.], Bureau of Entomology and Plant Quarantine, U.S. Dept. of Agriculture, 1950
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  17. 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
  18. By: Benson, Mary F. - United States. Bureau of Entomology and Plant Quarantine.
    Edition: [Revised June 1950]
    Publication info: [Washington, D.C.], Bureau of Entomology and Plant Quarantine, U.S. Dept. of Agriculture, 1950
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  19. 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
  20. 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, 1937
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library