Troupe, Thomas Kingsley Underwater robots / Thomas Kingsley Troupe - Chicago : World Book, Inc., c2018 - 31 pages : illustrated ; 24 cm. - Mighty Bot . Has index. ISBN: 978-0-7166-9334-5 Subjects--Topical Terms: RobotsRobotics Dewey Class. No.: CIR 629.8 T861un 2018