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  1. By: Webber, R. T. (Ray Trask), - Schaffner, J. V. (John Valentine),
    Publication info: Washington, D.C, U.S. Dept. of Agriculture, 1926
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  1. By: Webber, R. T. (Ray Trask),
    Type: Article
    In: Proceedings of the United States National Museum
    Volume: 90
    Issue: 3108
    Date: 1941
    Page Range: 287--304
    Publication Info: Washington Smithsonian Institution Press, [etc.]