WROUGHT IRON BRIDGES FOR THE NICOLAI RAILWAY OF RUSSIA. METHOD OF CONSTRUCTING THE NICOLAI RAILWAY BRIDGES AT ST. PETERSBURGH RUSSIA. WROUGHT IRON BRIDGE FOR THE NICOLAI RAILWAY., scientific american, 1871-08-12
WROUGHT IRON BRIDGES FOR THE NICOLAI RAILWAY OF RUSSIA. METHOD OF CONSTRUCTING THE NICOLAI RAILWAY BRIDGES AT ST. PETERSBURGH RUSSIA. WROUGHT IRON BRIDGE FOR THE NICOLAI RAILWAY., scientific american, 1871-08-12
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