| Child's Conception of Number Piaget, Jean / Used - Hardcover | GreatBookPricesUK | As new | $645.56 |
| Child's Conception of Number : Selected Works vol 2 Jean Piaget / New - Hardcover | AHA-BUCH GmbH | | $590.03 |
| Child's Conception of Number, Vol. 2 Piaget Jean / New - Hardcover | Biblios | | $587.55 |
| Child's Conception of Number Piaget, Jean / New - Hardcover | GreatBookPricesUK | | $513.16 |
| Child's Conception of Number, Vol. 2 Jean Piaget / New - Hardcover | Books Puddle | | $510.86 |
| Child's Conception of Number Piaget, Jean / Used - Hardcover | GreatBookPrices | As new | $500.00 |
| Child's Conception of Number Piaget, Jean / New - Hardcover | GreatBookPrices | | $500.00 |
| The Child's Conception of Number (Jean Piaget Selected Works, Volume 2) PIAGET, JEAN / Used - Hardcover | Green Ink Booksellers | | $139.43 |
| The Child's Conception of Number Piaget, Jean / Used - Hardcover | PsychoBabel & Skoob Books | | $68.32 |
| The Child's Conception of Number Piaget, Jean / Used - Hardcover | Bookcase | 1st Edition | $55.77 |
| The Child's Conception of Number Piaget, J. / Used - Hardcover | Anybook.com | | $52.33 |