Many of the earliest books, particularly those dating back to the 1900s and before, are now extremely scarce and increasingly expensive. We are republishing these classic works in affordable, high quality, modern editions, using the original text and artwork. Это и многое другое вы найдете в книге Cyclopedia Of Civil Engineering; A General Reference Work On Surveying, Railroad Engineering, Structural Engineering, Roofsand Bridges (Frederick Eugene Turneaure)