Transactions of the American Society of Civil Engineers, vol. LXVIII, Sept. 1910 :
Lavis, F.
Transactions of the American Society of Civil Engineers, vol. LXVIII, Sept. 1910 : The Bergen Hill Tunnels. Paper No. 1154 [electronic resource] / F. Lavis - Project Gutenberg, 2007 - Project Gutenberg 21083 .
Public domain in the USA.
Electronic text
Civil engineering -- Periodicals Railroad tunnels -- Design and construction
TA
Transactions of the American Society of Civil Engineers, vol. LXVIII, Sept. 1910 : The Bergen Hill Tunnels. Paper No. 1154 [electronic resource] / F. Lavis - Project Gutenberg, 2007 - Project Gutenberg 21083 .
Public domain in the USA.
Electronic text
Civil engineering -- Periodicals Railroad tunnels -- Design and construction
TA