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The relative crown length, needle loss, and vitality of fir trees of older (above 160 years of age) and younger (from about 70 to about 130 years, with single trees up to 160 years of age) generations were significantly correlated with the current 10 year, (1985-1994), radial increment at breast height. In the case of trees of the younger generation the type of tree-top and the degree of crown deformation...
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