Transactions of the American Society of Civil Engineers, Vol. LXVIII, Sept. 1910 :
Noble, Alfred, 1844-1914
Transactions of the American Society of Civil Engineers, Vol. LXVIII, Sept. 1910 : The New York Tunnel Extension of the Pennsylvania Railroad. The East River Division. Paper No. 1152 [electronic resource] / Alfred Noble - Project Gutenberg, 2006 - Project Gutenberg 18065 .
Public domain in the USA.
Electronic text
Railroad tunnels -- Design and construction Civil engineering -- Periodicals
TA
Transactions of the American Society of Civil Engineers, Vol. LXVIII, Sept. 1910 : The New York Tunnel Extension of the Pennsylvania Railroad. The East River Division. Paper No. 1152 [electronic resource] / Alfred Noble - Project Gutenberg, 2006 - Project Gutenberg 18065 .
Public domain in the USA.
Electronic text
Railroad tunnels -- Design and construction Civil engineering -- Periodicals
TA