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Challenge of the unknown
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5.79
Save $1.20! List Price: $6.99
Format: Paperback
Condition: Very Good
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5.59
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Condition: Very Good
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9.29
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Condition: Acceptable
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15.20
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12.59
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54.69
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Condition: Like New
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17.99
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Condition: New
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26.99
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Condition: Very Good
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32.39
Format: Hardcover
Condition: Very Good
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159.42
Save $2.16! List Price: $161.58
Format: Library Binding
Releases: Dec 30, 2026
By Tom P. Rippey III and Paul F. Wilson
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63.99
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Condition: Very Good
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6.39
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80.00
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21.49
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11.69
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14.21
Format: Paperback
Condition: New
$
59.00
Format: Unknown Binding
Condition: Very Good
![By Rudolf Dreikurs Children: The Challenge (Reprint) [Paperback]](https://m.media-amazon.com/images/I/41E2vxjv+BL._SL350_.jpg)
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12.79
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Format: Unknown Binding
Condition: Acceptable
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27.89
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33.95
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100.00
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41.98
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115.08
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