Rudimantary treatise on tubular and other Iron girderbridges /
Dempsey, G. Drysdale
Rudimantary treatise on tubular and other Iron girderbridges / by G. Drysdale Dempsey - 4th ed. - London : Crosby Lockwood, 1912.
Chemistry Iron
Rudimantary treatise on tubular and other Iron girderbridges / by G. Drysdale Dempsey - 4th ed. - London : Crosby Lockwood, 1912.
Chemistry Iron