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Betts, H. S. (12923) 



factors affecting structural timber. Engin. Rec. 70 1 255-257. illus. 

 1914. 



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forest service timber tests. Hardwood Rec. 1 (5) : 26-28, illus. 1908. 



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THE STRENGTH OF NORTH AMERICAN WOODS. U. S. Dept. Agr. MisC. Put). 46, 



18 pp. 1929. 

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TIMBER, ITS STRENGTH. SEASONING, AND GRADING. 234 pp., illUS. New York, 



McGraw Hill Book Co. 1919. 



and Greeley. W. B. (12927) 



structural timber in the united states. Internatl. Engin. Cong. Trans. 5 : 

 1-65, illus. 1915. 



and Newlin, J. A. (12928) 



STRENGTH TESTS OF STRUCTURAL TIMBERS TREATED BY COMMERCIAL WOOD-PRE- 

 SERVING processes. U. S. Dept. Agr. Bull. 286, 15 pp., illus. 1915. 



Betts, N. de W. (12929) 



rocky mountain mine timbers. U. S. Dept. Agr. Bull. 77, 34 pp., illus. 

 1914. 



and Heim, A. L. (12930) 



TESTS OF ROCKY MOUNTAIN WOODS FOR TELEPHONE POLES. U. S. Dept. Agr. 



Bull. 67, 28 pp., illus. 1914. 



BlENFAIT, J. L. (12931) 



RELATION OF THE MANNER OF FAILURE TO STRUCTURE OF WOOD UNDER COMPRES- 

 SION parallel to the grain. Jour. Agr. Research 33 : 183-193, illus. 

 1926. 



Bolsen. A. T., and Newlin, J. A. (12932) 



the commercial hickories. U. S. Dept. Agr., Forest Serv. Bull. 80, 64 pp., 

 illus. 1910. 



Boulton. B. C. (12933) 



properties of woods at io per cent moisture. Aerial Age 12 (1) : 11-13, 

 30; (2) : 43-44. 1920. 



Bovey. H. T. (12934) 



ON THE STRENGTH OF DOUGLAS FIR, WHITE PINE, AND RED PINE. Roy. SOC. 



Canada, Proc and Trans. 12 (3) : 11-18, illus. 1894. 



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ON THE STRESSES DEVELOPED IN BEAMS LOADED TRANSVERSELY. McGill Univ., 



Dept. Engin. Papers 6, 28 pp., illus. 1902. 



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RESULTS OF EXPERIMENTS ON THE STRENGTH OF WHITE PINE, RED PINE, HEM- 

 LOCK, and spruce. McGill Univ., Dept. Engin. Papers 1, 49 pp. 1898. 



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RESULTS OF TESTS OF WHITE PINE AND LARGE SCANTLING. Canad. SOC Civ. 



Engin/ Trans. 8 (1) : 135-139. 1893. 



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THE STRENGTH OF CANADIAN DOUGLAS FIR, RED PINE, WHITE PINE, AND SPRUCE. 



Canad. Soc Civ. Engin. Trans. 9 (1) : 69-236, illus. 1895. 

 Boyd, J. E. (12939) 



INVESTIGATION OF THE COMPRESSION STRENGTH OF SPRUCE STRUTS OF RECTANGULAR 

 CROSS SECTION AND THE DERIVATION OF FORMULAS SUITABLE FOR USE IN AIR- 

 PLANE design. U. S. Dept. Com., Bur. Standards Technol. Papers 152, 

 43 pp., illus. 1920. 



Boyle, W. F. (12940) 



kauri timber from solomon islands. U. S. Dept. Com., Bur. Foreign and 

 Dom. Com., Com. Repts. 47 : 488-489. 1927. 



British Columbia Department of Lands. Forest Branch. (12941) 



uses, strengths, and working stresses of british columbia timber. 24 pp. 

 illus. Victoria, B. C. 1920. 



