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  1. By: Hawksworth, Frank G. (Frank Goode), - Geils, Brian W
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
  1. By: Mathiasen, Robert L. - Parks, Catherine G. - Geils, Brian W - Beatty, Jerome S
    Type: Article
    In: Phytologia
    Volume: 84
    Date: 1998
    Page Range: 154--164
    Publication Info: Bronx Park, New York H.A. Gleason and H.N. Moldenke