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The ready availability and ease of fabrication of wood set the pattern for extensive use by early craftsmen, and there had accumulated over the years a large background of empirical information on its physical properties, characteristics, and methods of application. While wood is thus among the oldest structural materials, it significantly maintains an important place in our modern economy, as a result of the extensive engineering research and development since the turn of the century.
Assistant DirectorChairman, U. S. Forest Products Laboratory, Madison, Wis.