Description of construction of Pennsylvania Railroad tunnels into City of New York. (See also - no. 492 Jan. 1921 pp. 31-34 and 39)
Tunnels
Ry Engr
Railway Engineer ; 42 , n 494
1921
16 Figs.
Aufsatz (Zeitschrift)
Englisch
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Engineering Index Backfile | 1923
Engineering Index Backfile | 1923
Engineering Index Backfile | 1920
NTRS | 1991
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