Tests to determine the mechanical properties of wood, such as bending tests, compression tests, shearing tests, etc., to be strictly comparable must be made on straight-grained pieces free from defects, such as knots, shakes, etc., and in the same condition of seasoning. It would manifestly be misleading to compare the strength of oak containing defects with clear hemlock or the strength of green ash with dry birch.
Index of Surface-water Records
by Charles Franklin Keech, Donald J. Miller, Edward Peck Kaiser, Elizabeth B. Jaffe, Geological Survey (U.S.). Water Resources Division. Boston District, Geological Survey (U.S.). Water Resources Division. Oklahoma City District, Geological Survey (U.S.). Water Resources Division. Salt Lake City District, Geological Survey (U.S.). Water Resources Division. Tucson District, Mortimer Hay Staatz, Victor Thomas Allen, Herman L. Bauer
1949
Development Possibilities for Timber and Other Resources of the National Forests of Alaska
by B. F. Heintzleman
1950
Regional Planning. Part VII, Alaska--its Resources and Development, December 1937
by United States. National Resources Committee
1938