. Bulletin. Forests and forestry -- United States. Bulletin No. 12. U. S. DEPARTMENT OF AGRICULTURE. DIVISION OF FORESTRY TIMBER PHYSICS SERIES. ECONOMICAL DESIGNING OF TIMBER TRESTLE BRIDGES, BY A. L. JOHNSON, C. E. PREPARED UNDER THE DIRECTION OF B. E. FERNOW, CHIEF OF DIVISION OF W A S H I N G TON: GOVERNMENT PRINTING OFFICE. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original United States. Division of For

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. Bulletin. Forests and forestry -- United States. Bulletin No. 12. U. S. DEPARTMENT OF AGRICULTURE. DIVISION OF FORESTRY TIMBER PHYSICS SERIES. ECONOMICAL DESIGNING OF TIMBER TRESTLE BRIDGES, BY A. L. JOHNSON, C. E. PREPARED UNDER THE DIRECTION OF B. E. FERNOW, CHIEF OF DIVISION OF W A S H I N G TON: GOVERNMENT PRINTING OFFICE. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original United States. Division of Forestry. Washington : G. P. O.

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Keywords: ., bookpublisherwashingtongpo, booksubjectforestsandforestryunited