Entered at the Post Office of New York N. V. as Second Class Matter. Copyriahted by Munn & Co. Vol. LXI VNo. WEEKLY. Fig. IWORKS AT BETHLEHEM. MANUFACTURE OF HEAVY GUNS FOR U. S. NAVY. Fig. 3HYDRAULIC GUN FORGING. Fig. 2HYDRAULIC GUN CASTING. Fig. LMACHINE FOR RIFLING LARGE GUNS. MANUFACTURE OF HEAVY GUNS FOR UNITED STATES NAVY., scientific american, 1891-02-28
Entered at the Post Office of New York N. V. as Second Class Matter. Copyriahted by Munn & Co. Vol. LXI VNo. WEEKLY. Fig. IWORKS AT BETHLEHEM. MANUFACTURE OF HEAVY GUNS FOR U. S. NAVY. Fig. 3HYDRAULIC GUN FORGING. Fig. 2HYDRAULIC GUN CASTING. Fig. LMACHINE FOR RIFLING LARGE GUNS. MANUFACTURE OF HEAVY GUNS FOR UNITED STATES NAVY., scientific american, 1891-02-28
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