![](http://www.alamy.com/thumbs/6/725B85AB-7787-4D80-8E94-E00714E2F1FC/2CRBXXF.jpg)
. Railroad construction. Theory and practice. A textbook for the use of students in colleges and technical schools. By Walter Loring Webb . /yYZ. PERMANENT TIMBERING OF HEADING. \ \ \ \ / j- _ ] \ , t r PncENixviLLE Tunnel. P. S. V. {To face page 200.) PLATE XIL
Size: 2570px × 972px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., book, bookcentury1900, bookdecade1900, bookpublishernewyorkjwiley