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Filtering by: Alternative title ssim FG 21 Decade 1880-1889

Report on the relation of railroads to forest supplies and forestry : together with appendices on the structure of some timber ties, their behavior, and the cause of their decay in the road-bed; on wood preservation; on metal ties; and on the use of spark arresters

Creator:

United States. Department of Agriculture. Forestry Division

Resource Type:

Technical Report

Full Text:

support of this pro- 21 posal to substitute various timbers hitherto but sparingly used in track