Tankobon Hardcover
ISBN: 978-4-86220-188-1
ISBN-10: 4-86220-188-1
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Tankobon Hardcover
ISBN: 978-4-86220-188-1 ISBN-10: 4-86220-188-1 |
| See also (possibly by other authors): | ||
| 2007 | 単行本 | 算数頭をつくるひみつ (学研まんが 新・ひみつシリーズ) |
| 2004 | Tankobon Hardcover | The secret to better the head (Gakken comics New secret series) ISBN: 4052019490 (2004) [Japanese Import] |