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Infection
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The invasion of timber by fungi or other microorganisms.
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Infestation
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The establishment of insects or other animals in timber.
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interlocked grain
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Grain where the angle of the fibres periodically changes or reverses in successive layers.
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irregular grain
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Grain where the fibres contort and twist around knots, butts, curls and so on. Also called wild grain.
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ISO 14000 - environmental management standards
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ISO 14000 is a series of international, voluntary environmental management standards developed by the International Organisation for Standardisation to provide organisations with a common framework for managing environmental issues.
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isotropic
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Exhibiting the same properties in all directions.
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