The robot ransom (Boxcar children mysteries 147.)
by Warner, Gertrude Chandler, 1890-1979.
Series
Summary
Henry and Jessie's middle-school robotics team is going to the regional competition, but it seems like someone doesn't want their team to compete. Can the Aldens use their sleuthing skills and what they've learned about robotics to find the culprit and save the day? Full description
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