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Nautical charts (1908)
Putnam, G. R. (George Rockwell), b. 1865 · New York, J. Wiley & Sons; [etc.] · leaf 102
FIG. 27. ENGRAVING A CHART ON A COPPER PLATE. … FIG. 28. ENGRAVING SOUNDINGS ON A COPPER PLATE WITH A MACHINE. (85)Nautical charts
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
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