Bell's Breakthrough - Deutsch, Stacia, and Cohon, Rhody

Third graders travel back in time and find Professor Alexander Graham Bell, who's given up on the telephone annd is working on a new invention. Abigail and her friends must get him back on track. Illustrations.

Bell's Breakthrough 2013, Aladdin Paperbacks, New York

ISBN-13: 9781442495364

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Bell's Breakthrough 2013, Perfection Learning

ISBN-13: 9781627659475

Hardcover

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Bell's Breakthrough 2005, Aladdin Paperbacks, New York, NY

ISBN-13: 9780689870262

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