دانلود کتاب Principles of box and crate

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United States Department of Agriculture Washington, D. C., 1930. — 197 c.Our present consumption of forest products, because of its magnitude and urgency, can not be met or maintained by timber growing alone. It must be supplemented by vastly improved utilization. Through improved utihzation, all the merchantable timber we now have, whether in virgin forests or second growth, must be made to go as far as it will. Since over 13 per cent of all the lumber cut annually goes into lumber for boxes and crates and in addition 7 per cent of the wood pulp produced annually is used for the manufacture of fiber containers, it is clear that a thorough understanding of the fundamental principles of box and crate construction will be reflected in the more efficient utilization of the wood of our forests.