Pollination Mechanism and Seed Production Potential in Douglas-fir

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Effects of Lifting Date and Storage on 2+0 Douglas-Fir and Noble Fir

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Seed Source Variation for Height and Crown Traits of Fraser Fir Christmas Trees

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Effects of Site Preparation on Douglas-Fir Seedling Growth and Survival

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Notes: Insect Damage to Noble Fir Seed and the Feasibility of Protecting Cone Crops in Natural Stands

By Overhulser D. L.   Tanaka Y.  

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