Unknown. (2023). 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. Washington, government printing.
Chicago-čujuhus (17. p.)Unknown. 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. Washington, government printing, 2023.
MLA-čujuhus (9. p.)Unknown. 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. Washington, government printing, 2023.