conversion
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No known copyright restrictions(著作権制限なし)
No known copyright restrictions(著作権制限なし)
![Ladle of molten iron is poured into an open hearth furnace for conversion into steel, Allegheny Ludlum Steel[e] Corp., Brackenridge, Pa. Note the safety latch on the crane hook (LOC)](http://farm3.static.flickr.com/2284/2179220298_5ea4d35275_m.jpg)
Ladle of molten iron is poured into an open hearth furnace for conversion into steel, Allegheny Ludlum Steel[e] Corp., Brackenridge, Pa. Note the safety latch on the crane hook (LOC)
by The Library of Congress
by The Library of Congress
No known copyright restrictions(著作権制限なし)
![[Unidentified soldier in Confederate uniform with conversion musket and small Bowie knife] (LOC)](http://farm8.static.flickr.com/7036/6800448030_5f46fe0880_m.jpg)
[Unidentified soldier in Confederate uniform with conversion musket and small Bowie knife] (LOC)
by The Library of Congress
by The Library of Congress
No known copyright restrictions(著作権制限なし)
1,981件~2,040件 (全 15,671件)