THE NAVY'S DUMMY DRILL GUN. BY WALTER L. BEASLEY. Permanence of Iron Gall Inks. THE ICE OF THE ARCTIC WATERS. BY DAY ALLEN WILLEY. THE 7-INCH DUMMY DRILL GUN OF THE BATTLESHIP 'NEW HAMMIER., scientific american, -1909-03-27
THE NAVY'S DUMMY DRILL GUN. BY WALTER L. BEASLEY. Permanence of Iron Gall Inks. THE ICE OF THE ARCTIC WATERS. BY DAY ALLEN WILLEY. THE 7-INCH DUMMY DRILL GUN OF THE BATTLESHIP 'NEW HAMMIER., scientific american, -1909-03-27
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