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2. An approach to density measurement in Douglas fir;Briegleb;J. Forestry,1952
3. Pole-sized black walnut respond quickly to crown release;Clark;J. Forestry,1967
4. Le développement du hêtre-type en futaie jardinee;Colette;Bull. Société Forestière Belgique,1951
5. The estimation of the branchwood component of broadleaved woodlands;Corbyn;Forestry,1988