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Figure 2 Visual grade distribution of the sawn boards (Nordic Timber-grading rules, 1994) obtained from the logs of the pruned and control trees according to board location from the pith outwards (1 = centre board, 25 mm; 2 = board 26–50 mm from the pith, 3 = board 51–75 mm from the pith; 4–6 = the outermost boards). From: Effects of pruning in Norway spruce on tree growth and grading of sawn boards in Finland Forestry (Lond). 2014;87(3): doi: /forestry/cpt062 Forestry (Lond) | © Institute of Chartered Foresters, All rights reserved. For Permissions, please 1
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