dcsimg
Please read BHL's Acknowledgment of Harmful Content
Sort By:
  1. By: Keen, F. P. (Frederick Paul), - United States. Bureau of Entomology.
    Publication info: [Washington?], U.S. Dept. of Agriculture, [1927]
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
    Subjects: Arizona  Bark beetles  California  Control  Dendroctonus brevicomis  Dendroctonus jeffreyi  Dendroctonus ponderosae  Detection  Disease Outbreaks  forest pests  Idaho  Ips  Melanophila  Montana  Oregon  pest management  South Dakota  Surveys  Washington (State)  West (U.S.)  West United States