Fig. 22. WEAR OF A RAIL AT CITY HALL LOOP; Fig. 23. RAILS OPPOSITE WEAR OF RAILS AT GREAT CENTRAL STATION
The New York Rapid-transit Subway - 1908
Metroer
Illustrationer
Figs. 27. HOURLY VARIATIONS IN THE AMOUNT OF CARBON DROXIDE IN THE AIR OF THE SUBWAY. (Average of 1,244 Analyses.)
The New York Rapid-transit Subway - 1908
The New York Rapid-transit Subway
The New York Rapid-transit Subway - 1908
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