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ספרים בחינם

Transactions of the American Society of Civil Engineers, Vol. LXVIII, Sept. 1910 The New York Tunnel Extension of the Pennsylvania Railroad. Paper No. 1150

Charles W. Raymond · 2006

ספרייה ציבורית, Project Gutenberg. בלי הרשמה.

Civil engineering -- PeriodicalsRailroad tunnels -- Design and construction