  1978 - Zero Is Not Nothing [Young Math] (Other) ISBN-13: 9780690038293 ISBN-10: 0690038291 Genre: Children's Books ?  1976 - How Did Numbers Begin [Young Math Books] (Other) ISBN-13: 9780690007947 ISBN-10: 0690007949 Genre: Science & Math ?  1971 - What Is Symmetry [Young Mathematician Books] (Hardcover) ISBN-13: 9780713612516 ISBN-10: 0713612517 ? |
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