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  1. 1
    由 Hawinkels, Patrick
    出版 1987
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    Comparison of two felling methods in a semi-mechanised Bell feller-buncher operation : a dissertation submitted in partial fulfilment of the requirements for the degree of Bachelor of Forestry Science in the University of Canterbury /
  2. 2
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    Effects of elevation and seed source on tracheid length in young Ponderosa pine.
  3. 3
    由 Burdon, Rowland D.
    出版 1991
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    Introduced forest trees in New Zealand : recognition, role, and seed source.
  4. 4
    出版 1952
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    Ponderosa pine : the pick o' the pines : its properties, uses and grades.
  5. 5
    出版 1970
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    Regeneration of ponderosa pine : symposium held September 11-12, 1969 /

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