A little tugboat shows how he can bring big ships into the harbor even though he is small.

Im Mighty 2010, Hyoronsha/Tsai Fong Books

ISBN-13: 9784566001725

Japanese

Hardcover

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I'm Mighty! 2003, HarperCollins Children's Books, New York, NY

ISBN-13: 9780060092900

Hardcover

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I'm Mighty! 2003, Joanna Cotler Books, New York, NY

ISBN-13: 9780060092917

Hardcover

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