ISBN-13: 9781517315047 / Angielski / Miękka / 2015 / 76 str.
"Father," exclaimed Tom Swift, looking up from a paper he was reading, "I think I can win that prize " "What prize is that?" inquired the aged inventor, gazing away from a drawing of a complicated machine, and pausing in his task of making some intricate calculations. "You don't mean to say, Tom, that you're going to have a try for a government prize for a submarine, after all."