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  1. By: Ferguson, Dennis E. - Boyd, Raymond J. - Intermountain Research Station (Ogden, Utah)
    Publication info: [Ogden, Utah], U.S. Dept. of Agriculture, Forest Service, Intermountain Forest and Range Experiment Station, 1988
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
    Subjects: Bracken fern  Competition (Biology)  Conifers  Idaho  Phytotoxins  Seeds  Viability  
  2. By: Anderson, Sydney, - Koopman, Karl F.
    Publication info: New York, N.Y, American Museum of Natural History, c1981
    Holding Institution: American Museum of Natural History Library
    Subjects: Biogeography  Competition (Biology)  Habitat partitioning (Ecology)  Home range (Animal geography)  North America  Species