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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. The East River Division. Paper No. 1152

Alfred Noble · 2006

ספרייה ציבורית, Project Gutenberg. בלי הרשמה.

Civil engineering -- PeriodicalsRailroad tunnels -- Design and construction