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  1. 1
    by Dorman, Keith William, 1910-
    Published 1976
    “...Dept. of Agriculture, Forest Service,...”
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    The genetics and breeding of southern pines.
  2. 2
    by Carlisle, A.
    Published 1971
    “...Dept. of the Environment, Canadian Forestry Service,...”
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    The costs and benefits of tree improvement programs /
  3. 3
    by Orr-Ewing, A. L.
    Published 1972
    “...British Columbia Forest Service. Research Division,...”
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    Interracial crosses with Douglas fir; early field results /
  4. 4
    “...Forest Research Institute, New Zealand Forest Service,...”
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    Trials with arboricides for control of coppice growth of indigenous hardwoods /

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