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  1. By: Tietz, John G. - Equipment Development Center (Missoula, Mont.)
    Publication info: Missoula, Mont, U.S. Forest Service, Equipment Development Center, 1971
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
    Subjects: Conifers  Forest machinery  Pine cones  Seeds  Trees  United States  
  2. By: Spitzenberg, G. K
    Edition: 2. Aufl.
    Publication info: Berlin, P. Parey, 1898
    Holding Institution: University of Toronto - Gerstein Science Information Centre
    Subjects: Forest machinery  Tillage  
  3. By: Copes, Donald L. - Randall, William K. - Pacific Northwest Forest and Range Experiment Station (Portland, Or.)
    Publication info: [Portland, Or.?], U.S. Dept. of Agriculture, Forest Service, Pacific Northwest Forest and Range Experiment Station, [1983]
    Holding Institution: U.S. Department of Agriculture, National Agricultural Library
    Subjects: Forest machinery  Seed orchards  Seeds  Trees  United States