Transactions of the American Society of Civil Engineers, vol. LXVIII, Sept. 1910
The New York Tunnel Extension of the Pennsylvania Railroad.
The East River Tunnels. Paper No. 1159

Transactions of the American Society of Civil Engineers, vol. LXVIII, Sept. 1910 The New York Tunnel Extension of the Pennsylvania Railroad. The East River Tunnels. Paper No. 1159

by Francis Mason, James H. Brace, S. H. Woodard

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Civil engineering -- Periodicals; Railroad tunnels -- Design and construction