HOW THE SUBMARINE MENACE WAS MET AND VANQUISHED, WITH DESCRIPTIONS OF THE INVENTIONS AND DEVICES USED, FAST BOATS, MYSTERY SHIPS, NETS, AIRCRAFT, &c. &c., ALSO DESCRIBING THE SELECTION AND TRAINING OF THE ENORMOUS PERSONNEL USED IN THIS NEW BRANCH OF THE NAVY AUTHOR OF "SUBMARINES & SEA POWER" "SUBMARINES OF THE WORLD'S NAVIES" "SUBMARINE ENGINEERING OF TO-DAY" _&c._ _&c._ _&c._…
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